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JEE Main · Chemistry · 2024

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1
[JEE Main 2024, 9 Apr Shift 2, Q17] The incorrect statement about Glucose is :
Not attempted
A
Glucose remains in multiple isomeric form in its aqueous solution
B
Glucose is soluble in water because of having aldehyde functional group
C
Glucose is an aldohexose
D
Glucose is one of the monomer unit in sucrose
2
[JEE Main 2024, 9 Apr Shift 2, Q5] Which of the following compound can give positive iodoform test when treated with aqueous KOH\mathrm{KOH} solution followed by potassium hypoiodite.
Not attempted
A
(A)
B
(B)
C
(C)
D
CH3CH2CH2CHO{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{CHO}
3
[JEE Main 2024, 9 Apr Shift 2, Q7] Which of the following compounds will give silver mirror with ammoniacal silver nitrate? A. Formic acid B. Formaldehyde C. Benzaldehyde D. Acetone Choose the correct answer from the options given below :
Not attempted
A
B and C only
B
C and D only
C
A, B and C only
D
A only
4
[JEE Main 2024, 9 Apr Shift 2, Q18] Major product of the following reaction is
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
5
[JEE Main 2024, 9 Apr Shift 2, Q1] In the above reaction product 'P' is
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
6
[JEE Main 2024, 9 Apr Shift 2, Q15] Match List I with List II LIST ILIST IIA.K2[Ni(CN)4]I.sp3B.[Ni(CO)4]II.sp3d2C.[Co(NH3)6]Cl3III.dsp2D.Na3[CoF6]IV.d2sp3\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I} & & \text{LIST II} \\ \hline \text{A.} & K_2[\mathrm{Ni}(\mathrm{CN})_4] & \text{I.} & sp^3 \\ \hline \text{B.} & [\mathrm{Ni}(\mathrm{CO})_4] & \text{II.} & sp^3d^2 \\ \hline \text{C.} & [\mathrm{Co}{({\mathrm{NH}}_3)}_6]{\mathrm{Cl}}_3 & \text{III.} & dsp^2 \\ \hline \text{D.} & {\mathrm{Na}}_3[{\mathrm{CoF}}_6] & \text{IV.} & d^2sp^3 \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-II, C-IV, D-I
B
A-III, B-I, C-II, D-IV
C
A-I, B-III, C-II, D-IV
D
A-III, B-I, C-IV, D-II
7
[JEE Main 2024, 9 Apr Shift 2, Q19] The coordination environment of Ca2+{\mathrm{Ca}}^{2+} ion in its complex with EDTA4−{\mathrm{EDTA}}^{4-} is :
Not attempted
A
trigonal prismatic
B
octahedral
C
square planar
D
tetrahedral
8
[JEE Main 2024, 9 Apr Shift 2, Q4] The electronic configuration of Einsteinium is : (Given atomic number of Einsteinium =99=99 )
Not attempted
A
[Rn]5f136 d∘7 s2[\mathrm{Rn}]5f^{13}6{\ d}^{\circ}7{\ s}^2
B
[Rn]5f126 d∘7 s2[\mathrm{Rn}]5f^{12}6{\ d}^{\circ}7{\ s}^2
C
[Rn]5f116 d∘7 s2[\mathrm{Rn}]5f^{11}6{\ d}^{\circ}7{\ s}^2
D
[Rn]5f106 d∘7 s2[\mathrm{Rn}]5f^{10}6{\ d}^{\circ}7{\ s}^2
9
[JEE Main 2024, 9 Apr Shift 2, Q6] Give below are two statements : Statement I : The higher oxidation states are more stable down the group among transition elements unlike p-block elements. Statement II : Copper can not liberate hydrogen from weak acids. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is true but Statement II is false
B
Both Statement I and Statement II are false
C
Both Statement I and Statement II are true
D
Statement I is false but Statement II is true
10
[JEE Main 2024, 9 Apr Shift 2, Q25] A transition metal ' MM ' among Sc,Ti,V,Cr,Mn\mathrm{Sc},\mathrm{Ti},V,\mathrm{Cr},\mathrm{Mn} and Fe\mathrm{Fe} has the highest second ionisation enthalpy. The spin-only magnetic moment value of M+M^+ ion is _______ BM (Near integer) (Given atomic number Sc:21,Ti:22, V:23,Cr:24,Mn:25,Fe:26\mathrm{Sc}:21,\mathrm{Ti}:22,\ V:23,\mathrm{Cr}:24,\mathrm{Mn}:25,\mathrm{Fe}:26 )
Not attempted
Your answer: —
Correct answer: 6
11
[JEE Main 2024, 9 Apr Shift 2, Q26] Consider the following first order gas phase reaction at constant temperature A(g)→2B( g)+C(g)A(g)\to 2B(\ g)+C(g) If the total pressure of the gases is found to be 200 torr after 23 sec⁡\sec . and 300 torr upon the complete decomposition of A after a very long time, then the rate constant of the given reaction is ________ ×10−2 s−1\times {10}^{-2}{\ s}^{-1} (nearest integer) [Given : log⁡10(2)=0.301{\log}_{10}(2)=0.301 ]
Not attempted
Your answer: —
Correct answer: 3
12
[JEE Main 2024, 9 Apr Shift 2, Q9] Match List I with List II LIST I (Cell)LIST II (Use/Property/Reaction)A.Leclanche cellI.Converts energy of combustion into electrical energyB.Ni - Cd cellII.Does not involve any ion in solution and is used in hearing aidsC.Fuel cellIII.RechargeableD.Mercury cellIV.Reaction at anodeZn→Zn2++2e−\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Cell)} & & \text{LIST II (Use/Property/Reaction)} \\ \hline \text{A.} & \text{Leclanche cell} & \text{I.} & \text{Converts energy of combustion into electrical energy} \\ \hline \text{B.} & \text{Ni - Cd cell} & \text{II.} & \text{Does not involve any ion in solution and is used in hearing aids} \\ \hline \text{C.} & \text{Fuel cell} & \text{III.} & \text{Rechargeable} \\ \hline \text{D.} & \text{Mercury cell} & \text{IV.} & \text{Reaction at anode} \mathrm{Zn}\to {\mathrm{Zn}}^{2+}+2e^- \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
A-III, B-I, C-IV, D-II
B
A-I, B-II, C-III, D-IV
C
A-IV, B-III, C-I, D-II
D
A-II, B-III, C-IV, D-I
13
[JEE Main 2024, 9 Apr Shift 2, Q12] Which out of the following is a correct equation to show change in molar conductivity with respect to concentration for a weak electrolyte, if the symbols carry their usual meaning :
Not attempted
A
Λm−Λm∘+AC12=0Λ_m-Λ_m^{\circ}+{\mathrm{AC}}^{\frac{1}{2}}=0
B
Λm2C+KaΛmo2−KaΛmΛm∘=0Λ_m^2C+K_aΛ_m^{o^2}-K_aΛ_mΛ_m^{\circ}=0
C
Λm−Λm∘−AC12=0Λ_m-Λ_m^{\circ}-{\mathrm{AC}}^{\frac{1}{2}}=0
D
Λm2C−KaΛm∘2+KaΛmΛm∘=0Λ_m^2C-K_aΛ_m^{\circ 2}+K_aΛ_mΛ_m^{\circ}=0
14
[JEE Main 2024, 9 Apr Shift 2, Q30] The vapor pressure of pure benzene and methyl benzene at 27∘C{27}^{\circ}C is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapor phase, in equilibrium with an equimolar mixture of those two liquids (ideal solution) at the same temperature is _________ ×10−2\times {10}^{-2} (nearest integer)
Not attempted
Your answer: —
Correct answer: 23
15
[JEE Main 2024, 9 Apr Shift 2, Q20] The incorrect statement regarding ethyne is
Not attempted
A
The carbon - carbon bonds in ethyne is weaker than that in ethene
B
Both carbons are sp hybridised
C
The C−CC-C bonds in ethyne is shorter than that in ethene
D
Ethyne is linear
16
[JEE Main 2024, 9 Apr Shift 2, Q23] Number of compounds from the following which cannot undergo Friedel-Crafts reactions is: _________ toluene, nitrobenzene, xylene, cumene, aniline, chlorobenzene, mm -nitroaniline, mm -dinitrobenzene
Not attempted
Your answer: —
Correct answer: 4
17
[JEE Main 2024, 9 Apr Shift 2, Q2] The correct stability order of the following resonance structures of CH3−CH=CH−CHO{\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO} is
Not attempted
A
 II > III > I \text{ II }>\text{ III }>\text{ I }
B
 II > I > III \text{ II }>\text{ I }>\text{ III }
C
 III > II > I \text{ III }>\text{ II }>\text{ I }
D
 I > II > III \text{ I }>\text{ II }>\text{ III }
18
[JEE Main 2024, 9 Apr Shift 2, Q8] Total number of stereo isomers possible for the given structure :
Not attempted
A
4
B
2
C
8
D
3
19
[JEE Main 2024, 9 Apr Shift 2, Q16] Match List I with List II LIST I (Test)LIST II (Observation)A.Br2water testI.Yellow orange or orange red precipitate formedB.Ceric ammonium nitrate testII.Reddish orange colour disappearsC.Ferric chloride testIII.Red colour appearsD.2, 4 - DNP testIV.Blue, Green, Violet or Red colour appear\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Test)} & & \text{LIST II (Observation)} \\ \hline \text{A.} & {\mathrm{Br}}_2 \text{water test} & \text{I.} & \text{Yellow orange or orange red precipitate formed} \\ \hline \text{B.} & \text{Ceric ammonium nitrate test} & \text{II.} & \text{Reddish orange colour disappears} \\ \hline \text{C.} & \text{Ferric chloride test} & \text{III.} & \text{Red colour appears} \\ \hline \text{D.} & \text{2, 4 - DNP test} & \text{IV.} & \text{Blue, Green, Violet or Red colour appear} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-II, B-III, C-IV, D-I
B
A-III, B-IV, C-I, D-II
C
A-I, B-II, C-III, D-IV
D
A-IV, B-I, C-II, D-III
20
[JEE Main 2024, 9 Apr Shift 2, Q22] In the given TLC, the distance of spot A & B are 5 cm & 7 cm, from the bottom of TLC plate, respectively. RfR_f value of BB is x×10−1x\times {10}^{-1} times more than AA . The value of xx is __________.
Not attempted
Your answer: —
Correct answer: 15
21
[JEE Main 2024, 9 Apr Shift 2, Q11] Match List I with List II LIST ILIST IIA.Melting Point[K]I.T1>In>Ga>A1>BB.Ionic Radius[M+3/pm]II.B>T1>Al≈Ga>InC.ΔiH1[ kJ mol−1]III.T1>In>Al>Ga>BD.Atomic Radius [pm]IV.B>A1>T1>In>Ga\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I} & & \text{LIST II} \\ \hline \text{A.} & \text{Melting Point} [K] & \text{I.} & T1>\mathrm{In}>\mathrm{Ga}>A1>B \\ \hline \text{B.} & \text{Ionic Radius} [M^{+3}/\mathrm{pm}] & \text{II.} & B>T1>\mathrm{Al}\approx \mathrm{Ga}>\mathrm{In} \\ \hline \text{C.} & {\Delta}_iH_1[\ \mathrm{kJ}{\ \mathrm{mol}}^{-1}] & \text{III.} & T1>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>B \\ \hline \text{D.} & \text{Atomic Radius [pm]} & \text{IV.} & B>A1>T1>\mathrm{In}>\mathrm{Ga} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-IV, B-I, C-II, D-III
B
A-I, B-II, C-III, D-IV
C
A-III, B-IV, C-I, D-II
D
A-II, B-III, C-IV, D-I
22
[JEE Main 2024, 9 Apr Shift 2, Q28] Consider the following test for a group-IV cation. M2++H2S→A (Black precipitate)+ byproduct M^{2+}+H_2S\to A\text{ (Black precipitate)+ byproduct } A+ aqua regia →B+NOCl+S+H2OA+\text{ aqua regia }\to B+\mathrm{NOCl}+S+H_2O B+KNO2+CH3COOH→C+ byproduct B+{\mathrm{KNO}}_2+{\mathrm{CH}}_3\mathrm{COOH}\to C+\text{ byproduct } The spin-only magnetic moment value of the metal complex CC is _________ BM\mathrm{BM} (Nearest integer)
Not attempted
Your answer: —
Correct answer: 0
23
[JEE Main 2024, 9 Apr Shift 2, Q29] Number of oxygen atoms present in chemical formula of fuming sulphuric acid is ___________.
Not attempted
Your answer: —
Correct answer: 7
24
[JEE Main 2024, 9 Apr Shift 2, Q14] For a sparingly soluble salt AB2{\mathrm{AB}}_2 , the equilibrium concentrations of A2+A^{2+} ions and B−B^- ions are 1.2×10−4M1.2\times {10}^{-4}M and 0.24×10−3M0.24\times {10}^{-3}M , respectively. The solubility product of AB2{\mathrm{AB}}_2 is :
Not attempted
A
0.069×10−120.069\times {10}^{-12}
B
0.276×10−120.276\times {10}^{-12}
C
6.91×10−126.91\times {10}^{-12}
D
27.65×10−1227.65\times {10}^{-12}
25
[JEE Main 2024, 9 Apr Shift 2, Q27] When ΔHvap=30 kJ/mol\Delta H_{\mathrm{vap}}=30\ \mathrm{kJ}/\mathrm{mol} and ΔSvap=75 J mol−1 K−1\Delta S_{\mathrm{vap}}=75\ J{\ \mathrm{mol}}^{-1}{\ K}^{-1} , then the temperature of vapour, at one atmosphere is _________ K.
Not attempted
Your answer: —
Correct answer: 400
26
[JEE Main 2024, 9 Apr Shift 2, Q13] The correct increasing order for bond angles among BF3,PF3{\mathrm{BF}}_3,{\mathrm{PF}}_3 and ClF3{\mathrm{ClF}}_3 is :
Not attempted
A
BF3=PF3<ClF3{\mathrm{BF}}_3={\mathrm{PF}}_3<{\mathrm{ClF}}_3
B
BF3<PF3<ClF3{\mathrm{BF}}_3<{\mathrm{PF}}_3<{\mathrm{ClF}}_3
C
ClF3<PF3<BF3{\mathrm{ClF}}_3<{\mathrm{PF}}_3<{\mathrm{BF}}_3
D
PF3<BF3<ClF3{\mathrm{PF}}_3<{\mathrm{BF}}_3<{\mathrm{ClF}}_3
27
[JEE Main 2024, 9 Apr Shift 2, Q24] Total number of electrons present in (π∗)({\pi}^*) molecular orbitals of O2,O2+O_2,O_2^+ and O2−O_2^- is ________.
Not attempted
Your answer: —
Correct answer: 6
28
[JEE Main 2024, 9 Apr Shift 2, Q3] Match List I with List II LIST I (Element)LIST II (Electronic Configuration)A.NI.[Ar]3 d104 s24p5B.SII.[Ne]3 s23p4C.BrIII.[He]2 s22p3D.KrIV.[Ar]3 d104 s24p6\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Element)} & & \text{LIST II (Electronic Configuration)} \\ \hline \text{A.} & N & \text{I.} & [\mathrm{Ar}]3{\ d}^{10}4{\ s}^24p^5 \\ \hline \text{B.} & S & \text{II.} & [\mathrm{Ne}]3{\ s}^23p^4 \\ \hline \text{C.} & \mathrm{Br} & \text{III.} & [\mathrm{He}]2{\ s}^22p^3 \\ \hline \text{D.} & \mathrm{Kr} & \text{IV.} & [\mathrm{Ar}]3{\ d}^{10}4{\ s}^24p^6 \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-IV, B-III, C-II, D-I
B
A-I, B-IV, C-III, D-II
C
A-III, B-II, C-I, D-IV
D
A-II, B-I, C-IV, D-III
29
[JEE Main 2024, 9 Apr Shift 2, Q21] Based on Heisenberg's uncertainty principle, the uncertainty in the velocity of the electron to be found within an atomic nucleus of diameter 10−15 m{10}^{-15}\ m is ________ ×109 ms−1\times {10}^9{\ \mathrm{ms}}^{-1} (nearest integer) [Given : mass of electron =9.1×10−31 kg=9.1\times {10}^{-31}\ \mathrm{kg} , Plank's constant (h)=6.626×10−34Js(h)=6.626\times {10}^{-34}\mathrm{Js} ] (Value of π=3.14\pi =3.14 )
Not attempted
Your answer: —
Correct answer: 58
30
[JEE Main 2024, 9 Apr Shift 2, Q10] The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency ' AA ' ×1012\times {10}^{12} hertz and that has a radiant intensity in that direction of 1′B′\frac{1}{{}'B'} , watt per steradian. ' AA ' and ' BB ' are respectively
Not attempted
A
450 and 683
B
540 and 1683\frac{1}{683}
C
540 and 683
D
450 and 1683\frac{1}{683}
31
[JEE Main 2024, 9 Apr Shift 1, Q22] Total number of essential amino acid among the given list of amino acids is ________. Arginine, Phenylalanine, Aspartic acid, Cysteine, Histidine, Valine, Proline
Not attempted
Your answer: —
Correct answer: 4
32
[JEE Main 2024, 9 Apr Shift 1, Q12] Correct order of basic strength of Pyrrole , Pyridine and Piperidine is :
Not attempted
A
Pyridine > Piperidine > Pyrrole
B
Pyrrole > Piperidine > Pyridine
C
Pyrrole > Pyridine > Piperidine
D
Piperidine > Pyridine > Pyrrole
33
[JEE Main 2024, 9 Apr Shift 1, Q5] Identify major product "X" formed in the following reaction :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
34
[JEE Main 2024, 9 Apr Shift 1, Q8] What is the structure of C?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
35
[JEE Main 2024, 9 Apr Shift 1, Q1] Identify the product A and product B in the following set of reactions.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
36
[JEE Main 2024, 9 Apr Shift 1, Q13] For the given compounds, the correct order of increasing pKa{\mathrm{pK}}_a value : Choose the correct answer from the options given below :
Not attempted
A
(E) <(D)<(C)<(B)<(A)<(D)<(C)<(B)<(A)
B
(B) <(D)<(A)<(C)<(E)<(D)<(A)<(C)<(E)
C
(D) < (E) < (C) < (B) < (A)
D
(E) <(D)<(B)<(A)<(C)<(D)<(B)<(A)<(C)
37
[JEE Main 2024, 9 Apr Shift 1, Q18] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : SN2S_N2 reaction of C6H5CH2BrC_6H_5{\mathrm{CH}}_2\mathrm{Br} occurs more readily than the SN2S_N2 reaction of CH3CH2Br{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br} . Reason (R) : The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
(A) is not correct but (R) is correct
D
(A) is correct but (R) is not correct
38
[JEE Main 2024, 9 Apr Shift 1, Q20] In the following sequence of reaction, the major products B and C respectively are :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
39
[JEE Main 2024, 9 Apr Shift 1, Q15] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The total number of geometrical isomers shown by [Co(en)2Cl2]+[\mathrm{Co}(\mathrm{en})_2{\mathrm{Cl}}_2]^+ complex ion is three. Reason (R): [Co(en)2Cl2]+[\mathrm{Co}(\mathrm{en})_2{\mathrm{Cl}}_2]^+ complex ion has an octahedral geometry. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
(A) is correct but (R) is not correct
B
(A) is not correct but (R) is correct
C
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
D
Both (A) and (R) are correct and (R) is the correct explanation of (A)
40
[JEE Main 2024, 9 Apr Shift 1, Q23] Number of ambidentate ligands among the following is _________. NO2−,SCN−,C2O42−,NH3,CN−,SO42−,H2O. {\mathrm{NO}}_2^-,{\mathrm{SCN}}^-,C_2O_4^{2-},{\mathrm{NH}}_3,{\mathrm{CN}}^-,{\mathrm{SO}}_4^{2-},H_2O\text{. }
Not attempted
Your answer: —
Correct answer: 3
41
[JEE Main 2024, 9 Apr Shift 1, Q9] The electronic configuration of Cu(II)\mathrm{Cu}(\mathrm{II}) is 3 d93{\ d}^9 whereas that of Cu(I)\mathrm{Cu}(I) is 3 d103{\ d}^{10} . Which of the following is correct?
Not attempted
A
Cu(II)\mathrm{Cu}(\mathrm{II}) is more stable
B
Cu\mathrm{Cu} (II) is less stable
C
Cu(I)\mathrm{Cu}(I) and Cu(II)\mathrm{Cu}(\mathrm{II}) are equally stable
D
Stability of Cu(I)\mathrm{Cu}(I) and Cu(II)\mathrm{Cu}(\mathrm{II}) depends on nature of copper salts
42
[JEE Main 2024, 9 Apr Shift 1, Q24] Number of colourless lanthanoid ions among the following is __________. Eu3+,Lu3+,Nd3+,La3+,Sm3+{\mathrm{Eu}}^{3+},{\mathrm{Lu}}^{3+},{\mathrm{Nd}}^{3+},{\mathrm{La}}^{3+},{\mathrm{Sm}}^{3+}
Not attempted
Your answer: —
Correct answer: 2
43
[JEE Main 2024, 9 Apr Shift 1, Q26] Given below are two statements : Statement I : The rate law for the reaction A+B→CA+B\to C is rate (r)=k[A]2[B](r)=k[A]^2[B] . When the concentration of both AA and BB is doubled, the reaction rate is increased " xx " times. Statement II : The figure is showing "the variation in concentration against time plot" for a " yy " order reaction. The Value of x+yx+y is __________.
Not attempted
Your answer: —
Correct answer: 8
44
[JEE Main 2024, 9 Apr Shift 1, Q2] The molar conductivity for electrolytes AA and BB are plotted against C3/2C^{3/2} as shown below. Electrolytes AA and BB respectively are:
Not attempted
A
A - weak electrolyte B - weak electrolyte
B
A - weak electrolyte B - strong electrolyte
C
A - strong electrolyte B - strong electrolyte
D
A - strong electrolyte B - weak electrolyte
45
[JEE Main 2024, 9 Apr Shift 1, Q21] The standard reduction potentials at 298 K298\ K for the following half cells are given below : Cr2O72−+14H++6e−→2Cr3++7H2O,E∘=1.33 V{\mathrm{Cr}}_2O_7^{2-}+14H^++6e^-\to 2{\mathrm{Cr}}^{3+}+7H_2O, E^{\circ}=1.33\ V Fe3+(aq)+3e−→FeE∘=−0.04 VNi2+(aq)+2e−→NiE∘=−0.25 VAg+(aq)+e−→AgE∘=0.80 VAu3+(aq)+3e−→AuE∘=1.40 V\begin{array}{cc}{\mathrm{Fe}}^{3+}(\mathrm{aq})+3e^-\to \mathrm{Fe} & E^{\circ}=-0.04\ V \\ {\mathrm{Ni}}^{2+}(\mathrm{aq})+2e^-\to \mathrm{Ni} & E^{\circ}=-0.25\ V \\ {\mathrm{Ag}}^+(\mathrm{aq})+e^-\to \mathrm{Ag} & E^{\circ}=0.80\ V \\ {\mathrm{Au}}^{3+}(\mathrm{aq})+3e^-\to \mathrm{Au} & E^{\circ}=1.40\ V\end{array} Consider the given electrochemical reactions, The number of metal(s) which will be oxidized be Cr2O72−{\mathrm{Cr}}_2O_7^{2-} , in aqueous solution is _________.
Not attempted
Your answer: —
Correct answer: 3
46
[JEE Main 2024, 9 Apr Shift 1, Q4] 0.05M CuSO40.05M{\ \mathrm{CuSO}}_4 when treated with 0.01M K2Cr2O70.01M{\ K}_2{\mathrm{Cr}}_2O_7 gives green colour solution of Cu2Cr2O7{\mathrm{Cu}}_2{\mathrm{Cr}}_2O_7 . The two solutions are separated as shown below : [SPM : Semi Permeable Membrane] Due to osmosis :
Not attempted
A
Molarity of K2Cr2O7K_2{\mathrm{Cr}}_2O_7 solution is lowered.
B
Green colour formation observed on side Y.
C
Molarity of CuSO4{\mathrm{CuSO}}_4 solution is lowered.
D
Green colour formation observed on side X.
47
[JEE Main 2024, 9 Apr Shift 1, Q30] Molarity (M)(M) of an aqueous solution containing x gx\ g of anhyd. CuSO4{\mathrm{CuSO}}_4 in 500 mL500\ \mathrm{mL} solution at 32∘C{32}^{\circ}C is 2×10−1M2\times {10}^{-1}M . Its molality will be _________ ×10−3 m\times {10}^{-3}\ m . (nearest integer). [Given density of the solution =1.25 g/mL=1.25\ g/\mathrm{mL} ]
Not attempted
Your answer: —
Correct answer: 164
48
[JEE Main 2024, 9 Apr Shift 1, Q11] Relative stability of the contributing structures is :
Not attempted
A
(II) > (I) > (III)
B
(III) > (II) > (I)
C
(I) > (III) > (II)
D
(I) > (II) > (III)
49
[JEE Main 2024, 9 Apr Shift 1, Q16] Methods used for purification of organic compounds are based on :
Not attempted
A
neither on nature of compound nor on the impurity present.
B
presence of impurity only.
C
nature of compound and presence of impurity.
D
nature of compound only.
50
[JEE Main 2024, 9 Apr Shift 1, Q27] How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects?
Not attempted
Your answer: —
Correct answer: 4
51
[JEE Main 2024, 9 Apr Shift 1, Q6] The F−F^- ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the surface of teeth) into much harder fluoroapatite having the formula.
Not attempted
A
[3(Ca3(PO4)2)⋅CaF2][3({\mathrm{Ca}}_3{({\mathrm{PO}}_4)}_2)\cdot {\mathrm{CaF}}_2]
B
[3(Ca3(PO4)2)⋅Ca(OH)2][3({\mathrm{Ca}}_3{({\mathrm{PO}}_4)}_2)\cdot \mathrm{Ca}(\mathrm{OH})_2]
C
[3(Ca3(PO4)3)⋅CaF2][3({\mathrm{Ca}}_3{({\mathrm{PO}}_4)}_3)\cdot {\mathrm{CaF}}_2]
D
[3(Ca2(PO4)2)⋅Ca(OH)2][3({\mathrm{Ca}}_2{({\mathrm{PO}}_4)}_2)\cdot \mathrm{Ca}(\mathrm{OH})_2]
52
[JEE Main 2024, 9 Apr Shift 1, Q14] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Both rhombic and monoclinic sulphur exist as S8S_8 while oxygen exists as O2O_2 . Reason (R) : Oxygen forms pπ−pπp\pi -p\pi multiple bonds with itself and other elements having small size and high electronegativity like C,NC,N , which is not possible for sulphur. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
B
(A) is correct but (R) is not correct
C
(A) is not correct but (R) is correct
D
Both (A)(\mathbf{A}) and (R)(\mathbf{R}) are correct and (R)(\mathbf{R}) is the correct explanation of (A)(\mathbf{A})
53
[JEE Main 2024, 9 Apr Shift 1, Q19] On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed?
Not attempted
A
Sulphur
B
Nitric oxide
C
Lead nitrate
D
Nitrous oxide
54
[JEE Main 2024, 9 Apr Shift 1, Q3] Given below are two statements : Statement (I) : The oxidation state of an element in a particular compound is the charge acquired by its atom on the basis of electron gain enthalpy consideration from other atoms in the molecule. Statement (II) : pπ−pπp\pi -p\pi bond formation is more prevalent in second period elements over other periods. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is correct but Statement II is incorrect
B
Both Statement I and Statement II are correct
C
Statement I is incorrect but Statement II is correct
D
Both Statement I and Statement II are incorrect
55
[JEE Main 2024, 9 Apr Shift 1, Q28] When equal volume of 1 M HCl1\ M\ \mathrm{HCl} and 1 M H2SO41\ M{\ H}_2{\mathrm{SO}}_4 are separately neutralised by excess volume of 1M1M NaOH\mathrm{NaOH} solution. xx and y kJy\ \mathrm{kJ} of heat is liberated respectively. The value of y/xy/x is __________.
Not attempted
Your answer: —
Correct answer: 2
56
[JEE Main 2024, 9 Apr Shift 1, Q29] The heat of solution of anhydrous CuSO4{\mathrm{CuSO}}_4 and CuSO4⋅5H2O{\mathrm{CuSO}}_4\cdot 5H_2O are −70 kJ mol−1-70\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} and +12 kJ mol−1+12\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} respectively. The heat of hydration of CuSO4{\mathrm{CuSO}}_4 to CuSO4⋅5H2O{\mathrm{CuSO}}_4\cdot 5H_2O is −x kJ-x\ \mathrm{kJ} . The value of xx is ________. (nearest integer).
Not attempted
Your answer: —
Correct answer: 82
57
[JEE Main 2024, 9 Apr Shift 1, Q10] In which one of the following pairs the central atoms exhibit sp2{\mathrm{sp}}^2 hybridization ?
Not attempted
A
BF3{\mathrm{BF}}_3 and NO2−{\mathrm{NO}}_2^-
B
NH2−{\mathrm{NH}}_2^- and BF3{\mathrm{BF}}_3
C
NH2−{\mathrm{NH}}_2^- and H2OH_2O
D
H2OH_2O and NO2{\mathrm{NO}}_2
58
[JEE Main 2024, 9 Apr Shift 1, Q25] The total number of species from the following in which one unpaired electron is present, is _______. N2,O2,C2−,O2−,O22−,H2+,CN−,He2+N_2,O_2,C_2^-,O_2^-,O_2^{2-},H_2^+,{\mathrm{CN}}^-,{\mathrm{He}}_2^+
Not attempted
Your answer: —
Correct answer: 4
59
[JEE Main 2024, 9 Apr Shift 1, Q17] Compare the energies of following sets of quantum numbers for multielectron system. (A) n=4,1=1n=4,1=1 (B) n=4,1=2n=4,1=2 (C) n=3,l=1n=3,l=1 (D) n=3,1=2n=3,1=2 (E) n=4,1=0n=4,1=0 Choose the correct answer from the options given below :
Not attempted
A
(E)>(C)>(A)>(D)>(B)(E)>(C)>(A)>(D)>(B)
B
(B)>(A)>(C)>(E)>(D)(B)>(A)>(C)>(E)>(D)
C
(C)<(E)<(D)<(A)<(B)(C)<(E)<(D)<(A)<(B)
D
(E)<(C)<(D)<(A)<(B)(E)<(C)<(D)<(A)<(B)
60
[JEE Main 2024, 9 Apr Shift 1, Q7] Identify the incorrect statements regarding primary standard of titrimetric analysis. (A) It should be purely available in dry form. (B) It should not undergo chemical change in air. (C) It should be hygroscopic and should react with another chemical instantaneously and stoichiometrically. (D) It should be readily soluble in water. (E) KMnO4{\mathrm{KMnO}}_4 & NaOH\mathrm{NaOH} can be used as primary standard. Choose the correct answer from the options given below :
Not attempted
A
(C) and (E) only
B
(A) and (B) only
C
(B) and (E) only
D
(C) and (D) only
61
[JEE Main 2024, 8 Apr Shift 2, Q24] The total number of carbon atoms present in tyrosine, an amino acid, is ________.
Not attempted
Your answer: —
Correct answer: 9
62
[JEE Main 2024, 8 Apr Shift 2, Q3] Given below are two statements : Statement (I) : All the following compounds react with p-toluenesulfonyl chloride. C6H5NH2(C6H5)2NH(C6H5)3NC_6H_5{\mathrm{NH}}_2 {(C_6H_5)}_2\mathrm{NH} {(C_6H_5)}_3N Statement (II) : Their products in the above reaction are soluble is aqueous NaOH\mathrm{NaOH} . In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are true
C
Both Statement I and Statement II are false
D
Statement I is true but Statement II is false
63
[JEE Main 2024, 8 Apr Shift 2, Q10] The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: CH3CH2COOH,CH3COOH,CH3CH2CH2COOH,HCOOH{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH},{\mathrm{CH}}_3\mathrm{COOH},{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH},\mathrm{HCOOH}
Not attempted
A
HCOOH>CH3CH2CH2COOH>CH3CH2COOH>CH3COOH\mathrm{HCOOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{CH}}_3\mathrm{COOH}
B
HCOOH>CH3COOH>CH3CH2COOH>CH3CH2CH2COOH\mathrm{HCOOH}>{\mathrm{CH}}_3\mathrm{COOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}
C
CH3CH2CH2COOH>CH3CH2COOH>CH3COOH>HCOOH{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{CH}}_3\mathrm{COOH}>\mathrm{HCOOH}
D
CH3COOH>CH3CH2COOH>CH3CH2CH2COOH>HCOOH{\mathrm{CH}}_3\mathrm{COOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}>{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{COOH}>\mathrm{HCOOH}
64
[JEE Main 2024, 8 Apr Shift 2, Q26] Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous NaOH\mathrm{NaOH} after heating gives xx as the major product. The number of π\pi bonds in the product xx is ______.
Not attempted
Your answer: —
Correct answer: 9
65
[JEE Main 2024, 8 Apr Shift 2, Q1] Match List I with List II Choose the correct answer from the options given below :
Not attempted
A
(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
B
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
C
(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
D
(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
66
[JEE Main 2024, 8 Apr Shift 2, Q5] Which one the following compounds will readily react with dilute NaOH\mathrm{NaOH} ?
Not attempted
A
C6H5CH2OHC_6H_5{\mathrm{CH}}_2\mathrm{OH}
B
C2H5OHC_2H_5\mathrm{OH}
C
C6H5OHC_6H_5\mathrm{OH}
D
(CH3)3COH{({\mathrm{CH}}_3)}_3\mathrm{COH}
67
[JEE Main 2024, 8 Apr Shift 2, Q15] Given below are two statements : Statement (I) : SN2S_N2 reactions are 'stereospecific', indicating that they result in the formation of only one stereo-isomer as the product. Statement (II) : SN1S_N1 reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both Statement I and Statement II are false
B
Statement I is false but Statement II is true
C
Statement I is true but Statement II is false
D
Both Statement I and Statement II are true
68
[JEE Main 2024, 8 Apr Shift 2, Q4] Match List I with List II LIST I (Complex ion)LIST II (Spin only magnetic moment in B.M.)A.[Cr(NH3)6]3+I.4.90B.[NiCl4]2−II.3.87C.[CoF6]3−III.0.0D.[Ni(CN)4]2−IV.2.83\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Complex ion)} & & \text{LIST II (Spin only magnetic moment in B.M.)} \\ \hline \text{A.} & {[\mathrm{Cr}{({\mathrm{NH}}_3)}_6]}^{3+} & \text{I.} & \text{4.90} \\ \hline \text{B.} & {[{\mathrm{NiCl}}_4]}^{2-} & \text{II.} & \text{3.87} \\ \hline \text{C.} & {[{\mathrm{CoF}}_6]}^{3-} & \text{III.} & \text{0.0} \\ \hline \text{D.} & {[\mathrm{Ni}(\mathrm{CN})_4]}^{2-} & \text{IV.} & \text{2.83} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
B
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
C
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
D
(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
69
[JEE Main 2024, 8 Apr Shift 2, Q23] Total number of unpaired electrons in the complex ions [Co(NH3)6]3+[\mathrm{Co}({\mathrm{NH}}_3)_6]^{3+} and [NiCl4]2−[{\mathrm{NiCl}}_4]^{2-} is ________.
Not attempted
Your answer: —
Correct answer: 2
70
[JEE Main 2024, 8 Apr Shift 2, Q12] The equilibrium Cr2O72−⇌2CrO42−{\mathrm{Cr}}_2O_7^{2-}\rightleftharpoons 2{\mathrm{CrO}}_4^{2-} is shifted to the right in :
Not attempted
A
a weakly acidic medium
B
a basic medium
C
a neutral medium
D
an acidic medium
71
[JEE Main 2024, 8 Apr Shift 2, Q14] Given below are two statements : Statement (I) : Fusion of MnO2{\mathrm{MnO}}_2 with KOH\mathrm{KOH} and an oxidising agent gives dark green K2MnO4K_2{\mathrm{MnO}}_4 . Statement (II) : Manganate ion on electrolytic oxidation in alkaline medium gives permanganate ion. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is false but Statement II is true
B
Statement I is true but Statement II is false
C
Both Statement I and Statement II are false
D
Both Statement I and Statement II are true
72
[JEE Main 2024, 8 Apr Shift 2, Q11] For a reaction A⟶K1 B⟶K2CA\overset{K_1}{\longrightarrow }\ B\overset{K_2}{\longrightarrow }C If the rate of formation of B is set to be zero then the concentration of B is given by :
Not attempted
A
(K1−K2)[A](K_1-K_2)[A]
B
(K1+K2)[A](K_1+K_2)[A]
C
K1K2[ A]K_1K_2[\ A]
D
(K1/K2)[A](K_1/K_2)[A]
73
[JEE Main 2024, 8 Apr Shift 2, Q8] The emf of cell Tl∣Tl+(0.001M)∣Cu2+(0.01M)∣Cu\mathrm{Tl}|{{\mathrm{Tl}}^+}_{(0.001M)}|{{\mathrm{Cu}}^{2+}}_{(0.01M)}|\mathrm{Cu} is 0.83 V0.83\ V at 298 K298\ K . It could be increased by :
Not attempted
A
increasing concentration of Tl+{\mathrm{Tl}}^+ ions
B
increasing concentration of Cu2+{\mathrm{Cu}}^{2+} ions
C
increasing concentration of both Tl+{\mathrm{Tl}}^+ and Cu2+{\mathrm{Cu}}^{2+} ions
D
decreasing concentration of both Tl+{\mathrm{Tl}}^+ and Cu2+{\mathrm{Cu}}^{2+} ions
74
[JEE Main 2024, 8 Apr Shift 2, Q9] The reaction; 12H2( g)+AgCl(s)→H(aq)++Cl(aq)−+Ag(s)\frac{1}{2}H_{2(\ g)}+{\mathrm{AgCl}}_{(s)}\to H_{(\mathrm{aq})}^++{\mathrm{Cl}}_{(\mathrm{aq})}^-+{\mathrm{Ag}}_{(s)} occurs in which of the following galvanic cell :
Not attempted
A
Pt∣H2( g)∣HCl(soln.) ∣AgNO3(aq)∣Ag\mathrm{Pt}|H_{2(\ g)}|{\mathrm{HCl}}_{(\text{soln.) }}|{\mathrm{AgNO}}_{3(\mathrm{aq})}|\mathrm{Ag}
B
Ag∣AgCl(s)∣KCl(soln.) ∣AgNO3 (aq.) ∣Ag\mathrm{Ag}|{\mathrm{AgCl}}_{(s)}|{\mathrm{KCl}}_{\text{(soln.) }}|{\mathrm{AgNO}}_{3\text{ (aq.) }}|\mathrm{Ag}
C
Pt∣H2( g)∣KCl(soln.) ∣AgCl(s)∣Ag\mathrm{Pt}|H_{2(\ g)}|{\mathrm{KCl}}_{(\text{soln.) }}|{\mathrm{AgCl}}_{(s)}|\mathrm{Ag}
D
Pt∣H2( g)∣HCl(soln. )∣AgCl(s)∣Ag\mathrm{Pt}|H_{2(\ g)}|{\mathrm{HCl}}_{(\text{soln. })}|{\mathrm{AgCl}}_{(s)}|\mathrm{Ag}
75
[JEE Main 2024, 8 Apr Shift 2, Q27] A solution is prepared by adding 1 mole ethyl alcohol in 9 mole water. The mass percent of solute in the solution is ________ (Integer answer) (Given : Molar mass in g mol−1g{\ \mathrm{mol}}^{-1} Ethyl alcohol : 46 water : 18)
Not attempted
Your answer: —
Correct answer: 22
76
[JEE Main 2024, 8 Apr Shift 2, Q28] Molality of an aqueous solution of urea is 4.44 m\displaystyle 4.44 \mathrm{~m}. Mole fraction of urea in solution is x×10−3\displaystyle x \times 10^{-3}, Value of x\displaystyle x is ________. (Integer answer)
Not attempted
Your answer: —
Correct answer: 74
77
[JEE Main 2024, 8 Apr Shift 2, Q22] Total number of aromatic compounds among the following compounds is ______.
Not attempted
Your answer: —
Correct answer: 1
78
[JEE Main 2024, 8 Apr Shift 2, Q6] The shape of carbocation is :
Not attempted
A
tetrahedral
B
diagonal pyramidal
C
diagonal
D
trigonal planar
79
[JEE Main 2024, 8 Apr Shift 2, Q16] Match List I with List II LIST I (Test)LIST II (Identification)A.Bayer’s testI.PhenolB.Ceric ammonium nitrate testII.AldehydeC.Phthalein dye testIII.Alcoholic-OH groupD.Schiff’s testIV.Unsaturation\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Test)} & & \text{LIST II (Identification)} \\ \hline \text{A.} & \text{Bayer's test} & \text{I.} & \text{Phenol} \\ \hline \text{B.} & \text{Ceric ammonium nitrate test} & \text{II.} & \text{Aldehyde} \\ \hline \text{C.} & \text{Phthalein dye test} & \text{III.} & \text{Alcoholic-OH group} \\ \hline \text{D.} & \text{Schiff's test} & \text{IV.} & \text{Unsaturation} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
B
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
C
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
D
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
80
[JEE Main 2024, 8 Apr Shift 2, Q17] IUPAC name of following hydrocarbon(X) is :
Not attempted
A
2,5,6-Trimethyloctane
B
2-Ethyl-2,6-diethylheptane
C
3,4,7-Trimethyloctane
D
2-Ethyl-3,6-dimethylheptane
81
[JEE Main 2024, 8 Apr Shift 2, Q18] Given below are two statements : Statement (I) : Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement (II) : The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
82
[JEE Main 2024, 8 Apr Shift 2, Q20] In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is further treated with nitric acid and ammonium molybdate respectively. The yellow coloured precipitate obtained is :
Not attempted
A
Na3PO4⋅12MoO3{\mathrm{Na}}_3{\mathrm{PO}}_4\cdot 12{\mathrm{MoO}}_3
B
(NH4)3PO4⋅12(NH4)2MoO4{({\mathrm{NH}}_4)}_3{\mathrm{PO}}_4\cdot 12{({\mathrm{NH}}_4)}_2{\mathrm{MoO}}_4
C
MoPO4⋅21NH4NO3{\mathrm{MoPO}}_4\cdot 21{\mathrm{NH}}_4{\mathrm{NO}}_3
D
(NH4)3PO4⋅12MoO3{({\mathrm{NH}}_4)}_3{\mathrm{PO}}_4\cdot 12{\mathrm{MoO}}_3
83
[JEE Main 2024, 8 Apr Shift 2, Q25] The number of optically active compounds from the following is _________.
Not attempted
Your answer: —
Correct answer: 1
84
[JEE Main 2024, 8 Apr Shift 2, Q13] Identify the correct statements about p-block elements and their compounds. (A) Non metals have higher electronegativity than metals. (B) Non metals have lower ionisation enthalpy than metals. (C) Compounds formed between highly reactive nonmetals and highly reactive metals are generally ionic. (D) The non-metal oxides are generally basic in nature. (E) The metal oxides are generally acidic or neutral in nature. Choose the correct answer from the options given below :
Not attempted
A
(B) and (D) only
B
(B) and (E) only
C
(D) and (E) only
D
(A) and (C) only
85
[JEE Main 2024, 8 Apr Shift 2, Q19] Identify the incorrect statements about group 15 elements : (A) Dinitrogen is a diatomic gas which acts like an inert gas at room temperature. (B) The common oxidation states of these elements are −3,+3-3,+3 and +5. (C) Nitrogen has unique ability to form pπ−pπp\pi -p\pi multiple bonds. (D) The stability of +5 oxidation states increases down the group. (E) Nitrogen shows a maximum covalency of 6. Choose the correct answer from the options given below :
Not attempted
A
(A), (C), (E) only
B
(D) and (E) only
C
(A), (B), (D) only
D
(B), (D), (E) only
86
[JEE Main 2024, 8 Apr Shift 2, Q2] Given below are two statements : Statement (I) : A Buffer solution is the mixture of a salt and an acid or a base mixed in any particular quantities Statement (II) : Blood is naturally occurring buffer solution whose pH\mathrm{pH} is maintained by H2CO3/HCO3⊖H_2{\mathrm{CO}}_3/{\mathrm{HCO}}_3{}^{\ominus} concentrations. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both Statement I and Statement II are false
B
Both Statement I and Statement II are true
C
Statement I is false but Statement II is true
D
Statement I is true but Statement II is false
87
[JEE Main 2024, 8 Apr Shift 2, Q21] Δvap H⊖{\Delta}_{\text{vap }}H^{\ominus} for water is +40.79 kJ mol−1+40.79\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} at 1 bar and 100∘C{100}^{\circ}C . Change in internal energy for this vapourisation under same condition is ________ kJ mol−1\mathrm{kJ}{\ \mathrm{mol}}^{-1} . (Integer answer) (Given R=8.3 JK−1 mol−1R=8.3{\ \mathrm{JK}}^{-1}{\ \mathrm{mol}}^{-1} )
Not attempted
Your answer: —
Correct answer: 38
88
[JEE Main 2024, 8 Apr Shift 2, Q7] When ψA{\psi}_A and ψB{\psi}_B are the wave functions of atomic orbitals, then σ∗{\sigma}^* is represented by :
Not attempted
A
ψA+2ψB{\psi}_A+2{\psi}_B
B
ψA−ψB{\psi}_A-{\psi}_B
C
ψA−2ψB{\psi}_A-2{\psi}_B
D
ψA+ψB{\psi}_A+{\psi}_B
89
[JEE Main 2024, 8 Apr Shift 2, Q30] Number of molecules having bond order 2 from the following molecules is _________. C2,O2,Be2,Li2,Ne2, N2,He2C_2,O_2,{\mathrm{Be}}_2,{\mathrm{Li}}_2,{\mathrm{Ne}}_2,{\ N}_2,{\mathrm{He}}_2
Not attempted
Your answer: —
Correct answer: 2
90
[JEE Main 2024, 8 Apr Shift 2, Q29] Wavenumber for a radiation having 5800 Ao\overset{o}{A} wavelength is x×10 cm−1x\times 10{\ \mathrm{cm}}^{-1} The value of xx is ________. (Integer answer)
Not attempted
Your answer: —
Correct answer: 1724
91
[JEE Main 2024, 8 Apr Shift 1, Q19] The incorrect statement regarding the given structure is
Not attempted
A
can be oxidized to a dicarboxylic acid with Br2{\mathrm{Br}}_2 water
B
despite the presence of −CHO-\mathrm{CHO} does not give Schiff's test
C
will coexist in equilibrium with 2 other cyclic structure
D
has 4 asymmetric carbon atom
92
[JEE Main 2024, 8 Apr Shift 1, Q21] If 279 g279\ g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be ________ g. (nearest integer) (consider complete conversion).
Not attempted
Your answer: —
Correct answer: 591
93
[JEE Main 2024, 8 Apr Shift 1, Q30] Number of amine compounds from the following giving solids which are soluble in NaOH\mathrm{NaOH} upon reaction with Hinsberg's reagent is _________.
Not attempted
Your answer: —
Correct answer: 5
94
[JEE Main 2024, 8 Apr Shift 1, Q16] Identify the product (P) in the following reaction:
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
95
[JEE Main 2024, 8 Apr Shift 1, Q23] Major product B of the following reaction has ________ π\pi -bond.
Not attempted
Your answer: —
Correct answer: 5
96
[JEE Main 2024, 8 Apr Shift 1, Q15] Identify the major products A and B respectively in the following set of reactions.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
97
[JEE Main 2024, 8 Apr Shift 1, Q7] Which among the following compounds will undergo fastest SN2\mathrm{S}_{N}\mathrm{2} reaction.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
98
[JEE Main 2024, 8 Apr Shift 1, Q11] Number of Complexes with even number of electrons in t2gt_{2g} orbitals is - [Fe(H2O)6]2+,[Co(H2O)6]2+,[Co(H2O)6]3+,[Cu(H2O)6]2+,[Cr(H2O)6]2+{[\mathrm{Fe}{(H_2O)}_6]}^{2+},{[\mathrm{Co}{(H_2O)}_6]}^{2+},{[\mathrm{Co}{(H_2O)}_6]}^{3+},{[\mathrm{Cu}{(H_2O)}_6]}^{2+},{[\mathrm{Cr}{(H_2O)}_6]}^{2+}
Not attempted
A
3
B
2
C
1
D
5
99
[JEE Main 2024, 8 Apr Shift 1, Q13] An octahedral complex with the formula CoCl3⋅nNH3{\mathrm{CoCl}}_3\cdot {\mathrm{nNH}}_3 upon reaction with excess of AgNO3{\mathrm{AgNO}}_3 solution gives 2 moles of AgCl\mathrm{AgCl} . Consider the oxidation state of Co\mathrm{Co} in the complex is ' xx '. The value of " x+nx+n " is __________.
Not attempted
A
6
B
5
C
3
D
8
100
[JEE Main 2024, 8 Apr Shift 1, Q18] Given below are two statements: Statement I: N(CH3)3N{({\mathrm{CH}}_3)}_3 and P(CH3)3P{({\mathrm{CH}}_3)}_3 can act as ligands to form transition metal complexes. Statement II: As N and P are from same group, the nature of bonding of N(CH3)3N{({\mathrm{CH}}_3)}_3 and P(CH3)3P{({\mathrm{CH}}_3)}_3 is always same with transition metals. In the light of the above statements, choose the most appropriate answer from the options given below:
Not attempted
A
Both Statement I and Statement II are incorrect.
B
Both Statement I and Statement II are correct.
C
Statement I is incorrect but Statement II is correct.
D
Statement I is correct but Statement II is incorrect.
101
[JEE Main 2024, 8 Apr Shift 1, Q20] Match List I with List II LIST I (Compound)LIST II (Colour]A.Fe4[Fe(CN)6]3⋅xH2OI.VioletB.[Fe(CN)5NOS]4−II.Blood RedC.[Fe(SCN)]2+III.Prussian BlueD.(NH4)3PO4⋅12MoO3IV.Yellow\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Compound)} & & \text{LIST II (Colour]} \\ \hline \text{A.} & {\mathrm{Fe}}_4{[\mathrm{Fe}(\mathrm{CN})_6]}_3\cdot {\mathrm{xH}}_2O & \text{I.} & \text{Violet} \\ \hline \text{B.} & {[\mathrm{Fe}(\mathrm{CN})_5\mathrm{NOS}]}^{4-} & \text{II.} & \text{Blood Red} \\ \hline \text{C.} & [\mathrm{Fe}(\mathrm{SCN})]^{2+} & \text{III.} & \text{Prussian Blue} \\ \hline \text{D.} & {({\mathrm{NH}}_4)}_3{\mathrm{PO}}_4\cdot 12{\mathrm{MoO}}_3 & \text{IV.} & \text{Yellow} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-IV, B-I, C-II, D-III
B
A-I, B-II, C-III, D-IV
C
A-II, B-III, C-IV, D-I
D
A-III, B-I, C-II, D-IV
102
[JEE Main 2024, 8 Apr Shift 1, Q29] The 'spin only' magnetic moment value of MO42−{\mathrm{MO}}_4{}^{2-} is ________ BM. (Where M is a metal having least metallic radii. among Sc,Ti,V,Cr,Mn\mathrm{Sc},\mathrm{Ti},V,\mathrm{Cr},\mathrm{Mn} and Zn\mathrm{Zn} ). (Given atomic number: Sc=21,Ti=22, V=23,Cr=24,Mn=25\mathrm{Sc}=21,\mathrm{Ti}=22,\ V=23,\mathrm{Cr}=24,\mathrm{Mn}=25 and Zn=30\mathrm{Zn}=30 )
Not attempted
Your answer: —
Correct answer: 0
103
[JEE Main 2024, 8 Apr Shift 1, Q4] Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe3+{\mathrm{Fe}}^{3+} oxidises the iodide ion B. Fe3+{\mathrm{Fe}}^{3+} oxidises the persulphate ion C. Fe2+{\mathrm{Fe}}^{2+} reduces the iodide ion D. Fe2+{\mathrm{Fe}}^{2+} reduces the persulphate ion Choose the most appropriate answer from the options given below:
Not attempted
A
B and C only
B
A only
C
A and D only
D
B only
104
[JEE Main 2024, 8 Apr Shift 1, Q22] Consider the following reaction A+B→CA+B\to C The time taken for A to become 1/4th 1/4^{\text{th }} of its initial concentration is twice the time taken to become 1/21/2 of the same. Also, when the change of concentration of B is plotted against time, the resulting graph gives a straight line with a negative slope and a positive intercept on the concentration axis. The overall order of the reaction is ________.
Not attempted
Your answer: —
Correct answer: 1
105
[JEE Main 2024, 8 Apr Shift 1, Q26] A solution containing 10 g10\ g of an electrolyte AB2{\mathrm{AB}}_2 in 100 g100\ g of water boils at 100.52∘C{100.52}^{\circ}C . The degree of ionization of the electrolyte (α)(\alpha ) is _________ ×10−1\times {10}^{-1} . (nearest integer) [Given : Molar mass of AB2=200 g mol−1, Kb{\mathrm{AB}}_2=200\ g{\ \mathrm{mol}}^{-1},{\ K}_b (molal boiling point elevation const. of water) =0.52 K kg mol−1=0.52\ K\ \mathrm{kg}{\ \mathrm{mol}}^{-1} , boiling point of water =100∘C;AB2={100}^{\circ}C;{\mathrm{AB}}_2 ionises as AB2→A2++2 B−]{\mathrm{AB}}_2\to A^{2+}+2{\ B}^-]
Not attempted
Your answer: —
Correct answer: 5
106
[JEE Main 2024, 8 Apr Shift 1, Q5] Which of the following are aromatic?
Not attempted
A
B and D only
B
A and C only
C
C and D only
D
A and B only
107
[JEE Main 2024, 8 Apr Shift 1, Q14] In the given compound, the number of 2 ∘{}^{\circ} carbon atom/s is ________.
Not attempted
A
Two
B
Three
C
Four
D
One
108
[JEE Main 2024, 8 Apr Shift 1, Q17] Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below:
Not attempted
A
Both Statement I and Statement II are incorrect.
B
Both Statement I and Statement II are correct.
C
Statement I is correct but Statement II is incorrect.
D
Statement I is incorrect but Statement II is correct.
109
[JEE Main 2024, 8 Apr Shift 1, Q28] The number of optical isomers in following compound is : __________.
Not attempted
Your answer: —
Correct answer: 32
110
[JEE Main 2024, 8 Apr Shift 1, Q3] Give below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The stability order of +1 oxidation state of Ga\mathrm{Ga} , In and Tl\mathrm{Tl} is Ga < In < Tl. Reason R: The inert pair effect stabilizes the lower oxidation state down the group. In the light of the above statements, choose the correct answer from the options given below:
Not attempted
A
A is true but R is false.
B
Both A and R are true but R is NOT the correct explanation of A.
C
A is false but R is true.
D
Both A and R are true and R is the correct explanation of A.
111
[JEE Main 2024, 8 Apr Shift 1, Q6] Among the following halogens F2,Cl2,Br2 and I2F_2,{\mathrm{Cl}}_2,{\mathrm{Br}}_2\text{ and }I_2 Which can undergo disproportionation reactions?
Not attempted
A
F2F_2 and Cl2{\mathrm{Cl}}_2
B
Cl2,Br2{\mathrm{Cl}}_2,{\mathrm{Br}}_2 and I2I_2
C
Only I2I_2
D
F2,Cl2F_2,{\mathrm{Cl}}_2 and Br2{\mathrm{Br}}_2
112
[JEE Main 2024, 8 Apr Shift 1, Q10] Match List I with List II LIST I (Name of the test)LIST II (Reaction sequence involved) [M is metal]A.Borax bead testI.MCO3→MO⟶+ΔCo(NO3)2CoO⋅MOB.Charcoal cavity testII.MCO3→MCl2→M2+C.Cobalt nitrate testIII.MSO4⟶ΔNa2 B4O7M(BO2)2→MBO2→MD.Flame testIV.MSO4⟶ΔNa2CO3MCO3→MO→M\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Name of the test)} & & \text{LIST II (Reaction sequence involved) [M is metal]} \\ \hline \text{A.} & \text{Borax bead test} & \text{I.} & {\mathrm{MCO}}_3\to \mathrm{MO}{\longrightarrow}_{+\Delta}^{\mathrm{Co}{({\mathrm{NO}}_3)}_2}\mathrm{CoO}\cdot \mathrm{MO} \\ \hline \text{B.} & \text{Charcoal cavity test} & \text{II.} & {\mathrm{MCO}}_3\to {\mathrm{MCl}}_2\to M^{2+} \\ \hline \text{C.} & \text{Cobalt nitrate test} & \text{III.} & {\mathrm{MSO}}_4{\longrightarrow}_{\Delta}^{{\mathrm{Na}}_2{\ B}_4O_7}M{({\mathrm{BO}}_2)}_2\to {\mathrm{MBO}}_2\to M \\ \hline \text{D.} & \text{Flame test} & \text{IV.} & {\mathrm{MSO}}_4{\longrightarrow}_{\Delta}^{{\mathrm{Na}}_2{\mathrm{CO}}_3}{\mathrm{MCO}}_3\to \mathrm{MO}\to M \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-I, C-IV, D-II
B
A-III, B-IV, C-I, D-II
C
A-III, B-II, C-IV, D-I
D
A-III, B-I, C-II, D-IV
113
[JEE Main 2024, 8 Apr Shift 1, Q2] Thiosulphate reacts differently with iodine and bromine in the reactions given below: 2 S2O32−+I2→S4O62−+2I−S2O32−+5Br2+5H2O→2SO42−+4Br−+10H+\begin{array}{cc} & 2{\ S}_2O_3^{2-}+I_2\to S_4O_6^{2-}+2I^- \\ & S_2O_3^{2-}+5{\mathrm{Br}}_2+5H_2O\to 2{\mathrm{SO}}_4^{2-}+4{\mathrm{Br}}^-+10H^+\end{array} Which of the following statement justifies the above dual behaviour of thiosulphate?
Not attempted
A
Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions
B
Bromine is a weaker oxidant than iodine
C
Bromine is a stronger oxidant than iodine
D
Bromine undergoes oxidation and iodine undergoes reduction in these reactions
114
[JEE Main 2024, 8 Apr Shift 1, Q12] For the given hypothetical reactions, the equilibrium constants are as follows : X⇌Y;K1=1.0Y⇌Z;K2=2.0Z⇌W;K3=4.0\begin{array}{cc} & X\rightleftharpoons Y;K_1=1.0 \\ & Y\rightleftharpoons Z;K_2=2.0 \\ & Z\rightleftharpoons W;K_3=4.0\end{array} The equilibrium constant for the reaction X⇌WX\rightleftharpoons W is
Not attempted
A
12.0
B
8.0
C
6.0
D
7.0
115
[JEE Main 2024, 8 Apr Shift 1, Q25] Consider the figure provided. 1 mol1\ \mathrm{mol} of an ideal gas is kept in a cylinder, fitted with a piston, at the position A, at 18∘C{18}^{\circ}C . If the piston is moved to position BB , keeping the temperature unchanged, then ' xx ' LL atm work is done in this reversible process. x=x= ________ LL atm. (nearest integer) [Given : Absolute temperature =∘C+273.15,R=0.08206 L atm mol−1 K−1={}^{\circ}C+273.15,R=0.08206\ L\ \mathrm{atm}\ \mathrm{mol}{}^{-1}{\ K}^{-1} ]
Not attempted
Your answer: —
Correct answer: 55
116
[JEE Main 2024, 8 Apr Shift 1, Q8] Match List I with List II LIST I (Molecule)LIST II (Shape)A.NH3I.Square pyramidB.BrF5II.TetrahedralC.PCl5III.Trigonal pyramidalD.CH4IV.Trigonal bipyramidal\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Molecule)} & & \text{LIST II (Shape)} \\ \hline \text{A.} & {\mathrm{NH}}_3 & \text{I.} & \text{Square pyramid} \\ \hline \text{B.} & {\mathrm{BrF}}_5 & \text{II.} & \text{Tetrahedral} \\ \hline \text{C.} & {\mathrm{PCl}}_5 & \text{III.} & \text{Trigonal pyramidal} \\ \hline \text{D.} & {\mathrm{CH}}_4 & \text{IV.} & \text{Trigonal bipyramidal} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-II, B-IV, C-I, D-III
B
A-III, B-I, C-IV, D-II
C
A-IV, B-III, C-I, D-II
D
A-III, B-IV, C-I, D-II
117
[JEE Main 2024, 8 Apr Shift 1, Q27] Number of molecules from the following which are exceptions to octet rule is _________. CO2,NO2,H2SO4,BF3,CH4,SiF4,ClO2,PCl5,BeF2,C2H6,CHCl3,CBr4{\mathrm{CO}}_2,{\mathrm{NO}}_2,H_2{\mathrm{SO}}_4,{\mathrm{BF}}_3,{\mathrm{CH}}_4,{\mathrm{SiF}}_4,{\mathrm{ClO}}_2,{\mathrm{PCl}}_5,{\mathrm{BeF}}_2,C_2H_6,{\mathrm{CHCl}}_3,{\mathrm{CBr}}_4
Not attempted
Your answer: —
Correct answer: 6
118
[JEE Main 2024, 8 Apr Shift 1, Q9] Match List I with List II LIST I (Elements)LIST II (Properties in their respective groups)A.Cl,SI.Elements with highest electronegativityB.Ge,AsII.Elements with largest atomic sizeC.Fr,RaIII.Elements which show properties of both metals and non-metalD.F,OIV.Elements with highest negative electron gain enthalpy\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Elements)} & & \text{LIST II (Properties in their respective groups)} \\ \hline \text{A.} & \mathrm{Cl},S & \text{I.} & \text{Elements with highest electronegativity} \\ \hline \text{B.} & \mathrm{Ge},\mathrm{As} & \text{II.} & \text{Elements with largest atomic size} \\ \hline \text{C.} & \mathrm{Fr},\mathrm{Ra} & \text{III.} & \text{Elements which show properties of both metals and non-metal} \\ \hline \text{D.} & F,O & \text{IV.} & \text{Elements with highest negative electron gain enthalpy} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-II, C-I, D-IV
B
A-II, B-I, C-IV, D-III
C
A-II, B-III, C-IV, D-I
D
A-IV, B-III, C-II, D-I
119
[JEE Main 2024, 8 Apr Shift 1, Q24] A hypothetical electromagnetic wave is show below. The frequency of the wave is x×1019 Hzx\times {10}^{19}\ \mathrm{Hz} . x=x= _________ (nearest integer)
Not attempted
Your answer: —
Correct answer: 5
120
[JEE Main 2024, 8 Apr Shift 1, Q1] Combustion of glucose (C6H12O6)(C_6H_{12}O_6) produces CO2{\mathrm{CO}}_2 and water. The amount of oxygen (in gg ) required for the complete combustion of 900 g900\ g of glucose is : [Molar mass of glucose in g mol−1=180g{\ \mathrm{mol}}^{-1}=180 ]
Not attempted
A
32
B
480
C
800
D
960
121
[JEE Main 2024, 6 Apr Shift 2, Q16] The incorrect statements regarding enzymes are : (A) Enzymes are biocatalysts. (B) Enzymes are non-specific and can catalyse different kinds of reactions. (C) Most Enzymes are globular proteins. (D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose. Choose the correct answer from the option given below :
Not attempted
A
(B) and (D)
B
(A), (B) and (C)
C
(B) and (C)
D
(B), (C) and (D)
122
[JEE Main 2024, 6 Apr Shift 2, Q6] Identify the product A in the following reaction.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
123
[JEE Main 2024, 6 Apr Shift 2, Q26] An amine (X)(X) is prepared by ammonolysis of benzyl chloride. On adding p-toluenesulphonyl chloride to it the solution remains clear. Molar mass of the amine (X)(X) formed is _________ gmol−1g{\mathrm{mol}}^{-1} . (Given molar mass in gmol−1C:12,H:1,O:16, N:14{\mathrm{gmol}}^{-1}C:12,H:1,O:16,\ N:14 )
Not attempted
Your answer: —
Correct answer: 287
124
[JEE Main 2024, 6 Apr Shift 2, Q4] Consider the given reaction, identify the major product P.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
125
[JEE Main 2024, 6 Apr Shift 2, Q15] The major products formed : A and B respectively are :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
126
[JEE Main 2024, 6 Apr Shift 2, Q28] The ratio of number of oxygen atoms to bromine atoms in the product Q is _________ ×10−1\times {10}^{-1} .
Not attempted
Your answer: —
Correct answer: 15
127
[JEE Main 2024, 6 Apr Shift 2, Q8] Consider the above chemical reaction. Product "A" is :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
128
[JEE Main 2024, 6 Apr Shift 2, Q11] Match List I with List II. LIST I Tetrahedral ComplexLIST II Electronic configurationA.TiCl4I.e2,t20B.[FeO4]2−II.e4,t23C.[FeCl4]−III.e0,t20D.[CoCl4]2−IV.e2,t23\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I Tetrahedral Complex} & & \text{LIST II Electronic configuration} \\ \hline \text{A.} & {\mathrm{TiCl}}_4 & \text{I.} & e^2,t_2^0 \\ \hline \text{B.} & {[{\mathrm{FeO}}_4]}^{2-} & \text{II.} & e^4,t_2^3 \\ \hline \text{C.} & {[{\mathrm{FeCl}}_4]}^- & \text{III.} & e^0,t_2^0 \\ \hline \text{D.} & {[{\mathrm{CoCl}}_4]}^{2-} & \text{IV.} & e^2,t_2^3 \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
B
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
C
(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
D
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
129
[JEE Main 2024, 6 Apr Shift 2, Q18] The correct IUPAC name of [PtBr2(PMe3)2][{\mathrm{PtBr}}_2({\mathrm{PMe}}_3)_2] is :
Not attempted
A
bis(trimethylphosphine)dibromoplatinum(II)
B
dibromodi(trimethylphosphine)platinum(II)
C
dibromobis(trimethylphosphine)platinum(II)
D
bis[bromo(trimethylphosphine)]platinum(II)
130
[JEE Main 2024, 6 Apr Shift 2, Q27] Among VO2+,MnO4−{\mathrm{VO}}_2^+,{\mathrm{MnO}}_4^- and Cr2O72−{\mathrm{Cr}}_2O_7^{2-} , the spin-only magnetic moment value of the species with least oxidising ability is __________ BM (Nearest integer). (Given atomic member V=23,Mn=25,Cr=24V=23,\mathrm{Mn}=25,\mathrm{Cr}=24 )
Not attempted
Your answer: —
Correct answer: 0
131
[JEE Main 2024, 6 Apr Shift 2, Q25] Consider the two different first order reactions given below A+B→C (Reaction 1) P→Q (Reaction 2) \begin{array}{cc} & A+B\to C\text{ (Reaction 1) } \\ & P\to Q\text{ (Reaction 2) }\end{array} The ratio of the half life of Reaction 1 : Reaction 2 is 5:25:2 If t1t_1 and t2t_2 represent the time taken to complete 2/3rd 2/3^{\text{rd }} and 4/5th 4/5^{\text{th }} of Reaction 1 and Reaction 2 , respectively, then the value of the ratio t1:t2t_1:t_2 is _________ ×10−1\times {10}^{-1} (nearest integer). [Given : log⁡10(3)=0.477{\log}_{10}(3)=0.477 and log⁡10(5)=0.699{\log}_{10}(5)=0.699 ]
Not attempted
Your answer: —
Correct answer: 17
132
[JEE Main 2024, 6 Apr Shift 2, Q9] How can an electrochemical cell be converted into an electrolytic cell ?
Not attempted
A
Applying an external opposite potential greater than Ecell 0E_{\text{cell }}^0
B
Exchanging the electrodes at anode and cathode.
C
Applying an external opposite potential lower than E0cell E^0{}_{\text{cell }}
D
Reversing the flow of ions in salt bridge.
133
[JEE Main 2024, 6 Apr Shift 2, Q23] When ' xx ' ×10−2 mL\times {10}^{-2}\ \mathrm{mL} methanol (molar mass =32 g=32\ g ' density =0.792 g/cm3=0.792\ g/{\mathrm{cm}}^3 ) is added to 100 mL100\ \mathrm{mL} . water (density =1 g/cm3=1\ g/{\mathrm{cm}}^3 ), the following diagram is obtained. x=x= ________ (nearest integer). [Given : Molal freezing point depression constant of water at 273.15 K273.15\ K is 1.86 K kg mol−11.86\ K\ \mathrm{kg}{\ \mathrm{mol}}^{-1} ]
Not attempted
Your answer: —
Correct answer: 543
134
[JEE Main 2024, 6 Apr Shift 2, Q2] The correct arrangement for decreasing order of electrophilic substitution for above compounds is :
Not attempted
A
 (III) > (IV) > (II) > (I) \text{ (III) }>\text{ (IV) }>\text{ (II) }>\text{ (I) }
B
 (III) > (I) > (II) > (IV) \text{ (III) }>\text{ (I) }>\text{ (II) }>\text{ (IV) }
C
 (II) > (IV) > (III) > (I) \text{ (II) }>\text{ (IV) }>\text{ (III) }>\text{ (I) }
D
( IV) > (I) > (II) > (III) (\text{ IV) }>\text{ (I) }>\text{ (II) }>\text{ (III) }
135
[JEE Main 2024, 6 Apr Shift 2, Q19] The incorrect statement regarding the geometrical isomers of 2-butene is :
Not attempted
A
cis-2-butene and trans-2-butene are not interconvertible at room temperature.
B
trans-2-butene is more stable than cis-2-butene.
C
cis-2-butene has less dipole moment than trans-2-butene.
D
cis-2-butene and trans-2-butene are stereoisomers.
136
[JEE Main 2024, 6 Apr Shift 2, Q7] The correct statement among the following, for a "chromatography" purification method is :
Not attempted
A
RfR_f of a polar compound is smaller than that of a non-polar compound.
B
Non-polar compounds are retained at top and polar compounds come down in column chromatography.
C
Organic compounds run faster than solvent in the thin layer chromatographic plate.
D
RfR_f is an integral value.
137
[JEE Main 2024, 6 Apr Shift 2, Q22] Number of carbocations from the following that are not stabilized by hyperconjugation is _______.
Not attempted
Your answer: —
Correct answer: 5
138
[JEE Main 2024, 6 Apr Shift 2, Q1] The number of ions from the following that are expected to behave as oxidising agent is : Sn4+,Sn2+,Pb2+,Tl3+,Pb4+,Tl+{\mathrm{Sn}}^{4+},{\mathrm{Sn}}^{2+},{\mathrm{Pb}}^{2+},{\mathrm{Tl}}^{3+},{\mathrm{Pb}}^{4+},{\mathrm{Tl}}^+
Not attempted
A
3
B
4
C
2
D
1
139
[JEE Main 2024, 6 Apr Shift 2, Q3] During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in NH4OH{\mathrm{NH}}_4\mathrm{OH} solution when sodium carbonate extract was first acidified with dil. HNO3{\mathrm{HNO}}_3 and then AgNO3{\mathrm{AgNO}}_3 solution was added. This indicates presence of :
Not attempted
A
I−I^-
B
CO32−{\mathrm{CO}}_3{}^{2-}
C
Cl−{\mathrm{Cl}}^-
D
Br−{\mathrm{Br}}^-
140
[JEE Main 2024, 6 Apr Shift 2, Q13] Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases down the group from CC to Pb\mathrm{Pb} in a regular manner. (B) Electronegativity decreases from CC to Pb\mathrm{Pb} down the group gradually. (C) Maximum covalance of CC is 4 whereas other elements can expand their covalance due to presence of d orbitals. (D) Heavier elements do not form pπ−pπp\pi -p\pi bonds. (E) Carbon can exhibit negative oxidation states. Choose the correct answer from the options given below :
Not attempted
A
(A), (B) and (C) Only
B
(A) and (B) Only
C
(C), (D) and (E) Only
D
(C) and (D) Only
141
[JEE Main 2024, 6 Apr Shift 2, Q20] Consider the following reactions The number of protons that do not involve in hydrogen bonding in the product B is _________.
Not attempted
Your answer: —
Correct answer: 12
142
[JEE Main 2024, 6 Apr Shift 2, Q5] Match List I with List II. LIST I ReactionLIST II Type of redox reactionA.N2( g)+O2( g)→2NO(g)I.DecompositionB.2 Pb(NO3)2( s)→2PbO(s)+4NO2( g)+O2( g)II.DisplacementC.2Na(s)+2H2O(l)→2NaOH(aq.)+H2( g)III.DisproportionationD.2NO2( g)+2−OH( aq. )→NO2(aq.)−+NO3( aq. )−+H2O(l)IV.Combination\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I Reaction} & & \text{LIST II Type of redox reaction} \\ \hline \text{A.} & N_{2(\ g)}+O_{2(\ g)}\to 2{\mathrm{NO}}_{(g)} & \text{I.} & \text{Decomposition} \\ \hline \text{B.} & 2\ \mathrm{Pb}{({\mathrm{NO}}_3)}_{2(\ s)}\to 2{\mathrm{PbO}}_{(s)}+4{\mathrm{NO}}_{2(\ g)}+O_{2(\ g)} & \text{II.} & \text{Displacement} \\ \hline \text{C.} & 2{\mathrm{Na}}_{(s)}+2H_2O_{(l)}\to 2{\mathrm{NaOH}}_{(\mathrm{aq}.)}+H_{2(\ g)} & \text{III.} & \text{Disproportionation} \\ \hline \text{D.} & 2{\mathrm{NO}}_{2(\ g)}+2^-\mathrm{OH}(\text{ aq. })\to {\mathrm{NO}}_{2(\mathrm{aq}.)}^-+{\mathrm{NO}}_{3(\text{ aq. })}^-+H_2O_{(l)} & \text{IV.} & \text{Combination} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
B
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
C
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
D
(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
143
[JEE Main 2024, 6 Apr Shift 2, Q17] The ratio KPKC\frac{K_P}{K_C} for the reaction : CO(g)+12O2( g)⇌CO2( g){\mathrm{CO}}_{(g)}+\frac{1}{2}O_{2(\ g)}\rightleftharpoons {\mathrm{CO}}_{2(\ g)} is :
Not attempted
A
1
B
(RT)1/2(\mathrm{RT})^{1/2}
C
RT
D
1RT\frac{1}{\sqrt{RT}}
144
[JEE Main 2024, 6 Apr Shift 2, Q21] For the reaction at 298 K,2 A+B→C,ΔH=400 kJ mol−1298\ K,2\ A+B\to C,\Delta H=400\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} and ΔS=0.2 kJ mol−1 K−1\Delta S=0.2\ \mathrm{kJ}{\ \mathrm{mol}}^{-1}{\ K}^{-1} . The reaction will become spontaneous above __________ KK .
Not attempted
Your answer: —
Correct answer: 2000
145
[JEE Main 2024, 6 Apr Shift 2, Q10] Given below are two statements : Statement I : PF5{\mathrm{PF}}_5 and BrF5{\mathrm{BrF}}_5 both exhibit sp3 d{\mathrm{sp}}^3\ d hybridisation. Statement II : Both SF6{\mathrm{SF}}_6 and [Co(NH3)6]3+[\mathrm{Co}({\mathrm{NH}}_3)_6]^{3+} exhibit sp3 d2{\mathrm{sp}}^3{\ d}^2 hybridisation. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both Statement I and Statement II are false
B
Statement I is true but Statement II is false
C
Statement I is false but Statement II is true
D
Both Statement I and Statement II are true
146
[JEE Main 2024, 6 Apr Shift 2, Q29] Total number of species from the following with central atom utilising sp2{\mathrm{sp}}^2 hybrid orbitals for bonding is ________. NH3,SO2,SiO2,BeCl2,C2H2,C2H4,BCl3,HCHO,C6H6,BF3,C2H4Cl2{\mathrm{NH}}_3,{\mathrm{SO}}_2,{\mathrm{SiO}}_2,{\mathrm{BeCl}}_2,C_2H_2,C_2H_4,{\mathrm{BCl}}_3,\mathrm{HCHO},C_6H_6,{\mathrm{BF}}_3,C_2H_4{\mathrm{Cl}}_2
Not attempted
Your answer: —
Correct answer: 6
147
[JEE Main 2024, 6 Apr Shift 2, Q14] Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) Sc\mathrm{Sc} (B) Cr\mathrm{Cr} (C) VV (D) Ti\mathrm{Ti} (E) Mn\mathrm{Mn} Choose the correct answer from the options given below :
Not attempted
A
(A)<(D)<(C)<(B)<(E)(A)<(D)<(C)<(B)<(E)
B
(A)<(D)<(C)<(E)<(B)(A)<(D)<(C)<(E)<(B)
C
(B)<(C)<(D)<(E)<(A)(B)<(C)<(D)<(E)<(A)
D
(C)<(E)<(B)<(A)<(D)(C)<(E)<(B)<(A)<(D)
148
[JEE Main 2024, 6 Apr Shift 2, Q24] For hydrogen atom, energy of an electron in first excited state is −3.4 eV,K.E-3.4\ \mathrm{eV},K.E . of the same electron of hydrogen atom is x eVx\ \mathrm{eV} . Value of xx is _________ ×10−1 eV\times {10}^{-1}\ \mathrm{eV} . (Nearest integer)
Not attempted
Your answer: —
Correct answer: 34
149
[JEE Main 2024, 6 Apr Shift 2, Q12] Molality (m)(m) of 3M3M aqueous solution of NaCl\mathrm{NaCl} is : (Given : Density of solution =1.25 g mL−1=1.25\ g{\ \mathrm{mL}}^{-1} , Molar mass in g mol−1:Na−23,Cl−35.5g{\ \mathrm{mol}}^{-1}:\mathrm{Na}-23,\mathrm{Cl}-35.5 )
Not attempted
A
2.90 m
B
3.85 m
C
1.90 m
D
2.79 m
150
[JEE Main 2024, 6 Apr Shift 1, Q18] DNA molecule contains 4 bases whose structure are shown below. One of the structures is not correct, identify the incorrect base structure.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
151
[JEE Main 2024, 6 Apr Shift 1, Q27] 9.3 g9.3\ g of pure aniline upon diazotisation followed by coupling with phenol gives an orange dye. The mass of orange dye produced (assume 100% yield/conversion) is ________ g. (nearest integer)
Not attempted
Your answer: —
Correct answer: 20
152
[JEE Main 2024, 6 Apr Shift 1, Q17] Which among the following aldehydes is most reactive towards nucleophilic addition reactions?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
153
[JEE Main 2024, 6 Apr Shift 1, Q16] In Reimer - Tiemann reaction, phenol is converted into salicylaldehyde through an intermediate. The structure of intermediate is __________.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
154
[JEE Main 2024, 6 Apr Shift 1, Q20] Given below are two statements : Statement I : Piciric acid is 2,4,6 - trinitrotoluene. Statement II : Phenol - 2,4 - disulphonic acid is treated with Conc. HNO3{\mathrm{HNO}}_3 to get picric acid. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is incorrect but Statement II is correct
B
Both Statement I and Statement II are incorrect
C
Both Statement I and Statement II are correct
D
Statement I is correct but Statement II is incorrect
155
[JEE Main 2024, 6 Apr Shift 1, Q3] Match List I with List II LIST I (Compound)LIST II (Uses)A.IdoformI.Fire extinguisherB.Carbon tetrachlorideII.InsecticideC.CFCIII.AntisepticD.DDTIV.Refrigerants\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Compound)} & & \text{LIST II (Uses)} \\ \hline \text{A.} & \text{Idoform} & \text{I.} & \text{Fire extinguisher} \\ \hline \text{B.} & \text{Carbon tetrachloride} & \text{II.} & \text{Insecticide} \\ \hline \text{C.} & \text{CFC} & \text{III.} & \text{Antiseptic} \\ \hline \text{D.} & \text{DDT} & \text{IV.} & \text{Refrigerants} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-II, B-IV, C-I, D-III
B
A-III, B-I, C-IV, D-II
C
A-III, B-II, C-IV, D-I
D
A-I, B-II, C-III, D-IV
156
[JEE Main 2024, 6 Apr Shift 1, Q6] Consider the following complexes (A) [CoCl(NH3)5]2+{[\mathrm{CoCl}{({\mathrm{NH}}_3)}_5]}^{2+} , (B) [Co(CN)6]3−{[\mathrm{Co}(\mathrm{CN})_6]}^{3-} , (C) [Co(NH3)5(H2O)]3+{[\mathrm{Co}{({\mathrm{NH}}_3)}_5(H_2O)]}^{3+} , (D) [Cu(H2O)4]2+{[\mathrm{Cu}{(H_2O)}_4]}^{2+} The correct order of A, B, C and D in terms of wavenumber of light absorbed is :
Not attempted
A
D < A < C < B
B
B < C < A < D
C
C < D < A < B
D
A < C < B < D
157
[JEE Main 2024, 6 Apr Shift 1, Q1] The number of element from the following that do not belong to lanthanoids is Eu,Cm,Er,Tb,Yb\mathrm{Eu},\mathrm{Cm},\mathrm{Er},\mathrm{Tb},\mathrm{Yb} and Lu\mathrm{Lu}
Not attempted
A
3
B
1
C
4
D
5
158
[JEE Main 2024, 6 Apr Shift 1, Q26] The difference in the 'spin-only' magnetic moment values of KMnO4{\mathrm{KMnO}}_4 and the manganese product formed during titration of KMnO4{\mathrm{KMnO}}_4 against oxalic acid in acidic medium is ________ BM\mathrm{BM} . (nearest integer)
Not attempted
Your answer: —
Correct answer: 6
159
[JEE Main 2024, 6 Apr Shift 1, Q29] Among CrO,Cr2O3\mathrm{CrO},{\mathrm{Cr}}_2O_3 and CrO3{\mathrm{CrO}}_3 , the sum of spin-only magnetic moment values of basic and amphoteric oxides is _________ 10−2BM{10}^{-2}\mathrm{BM} (nearest integer). (Given atomic number of Cr\mathrm{Cr} is 24 )
Not attempted
Your answer: —
Correct answer: 877
160
[JEE Main 2024, 6 Apr Shift 1, Q22] Time required for 99.9%99.9\% completion of a first order reaction is _________ times the time required for completion of 90%90\% reaction.(nearest integer)
Not attempted
Your answer: —
Correct answer: 3
161
[JEE Main 2024, 6 Apr Shift 1, Q2] A conductivity cell with two electrodes (dark side) are half filled with infinitely dilute aqueous solution of a weak electrolyte. If volume is doubled by adding more water at constant temperature, the molar conductivity of the cell will -
Not attempted
A
depend upon type of electrolyte
B
increase sharply
C
decrease sharply
D
remain same or can not be measured accurately
162
[JEE Main 2024, 6 Apr Shift 1, Q23] Consider the dissociation of the weak acid HX as given below HX(aq)⇌H+(aq)+X−(aq),Ka=1.2×10−5\mathrm{HX}(\mathrm{aq})\rightleftharpoons H^+(\mathrm{aq})+X^-(\mathrm{aq}),\mathrm{Ka}=1.2\times {10}^{-5} [ KaK_a : dissociation constant] The osmotic pressure of 0.03M0.03M aqueous solution of HX\mathrm{HX} at 300 K300\ K is _________ ×10−2\times {10}^{-2} bar (nearest integer). [Given : R=0.083 L bar mol−1 K−1R=0.083\ L\ \mathrm{bar}{\ \mathrm{mol}}^{-1}{\ K}^{-1} ]
Not attempted
Your answer: —
Correct answer: 76
163
[JEE Main 2024, 6 Apr Shift 1, Q21] The major product of the following reaction is P. CH3C≡C−CH3{\mathrm{CH}}_3C\equiv C-{\mathrm{CH}}_3 ⟶ (ii) dil. KMnO4273 K (i) Na /liq. NH3{\longrightarrow}_{\begin{array}{c}\text{ (ii) dil. }{\mathrm{KMnO}}_4 \\ 273\ K\end{array}}^{\text{ (i) }\mathrm{Na}\text{ /liq. }{\mathrm{NH}}_3} 'P' Number of oxygen atoms present in product ' PP ' is _______. (nearest integer)
Not attempted
Your answer: —
Correct answer: 2
164
[JEE Main 2024, 6 Apr Shift 1, Q25] The major products from the following reaction sequence are product A and product B. The total sum of π\pi electrons in product A and product B are __________ (nearest integer)
Not attempted
Your answer: —
Correct answer: 8
165
[JEE Main 2024, 6 Apr Shift 1, Q7] Functional group present in sulphonic acids is :
Not attempted
A
−- SO 2{}_2
B
(B)
C
−SO3H-{\mathrm{SO}}_3H
D
−SO4H-{\mathrm{SO}}_4H
166
[JEE Main 2024, 6 Apr Shift 1, Q13] Which of the following statements are correct? A. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. B. Aniline can be purified by steam distillation as aniline is miscible in water. C. Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope. D. An organic compound is pure, if mixed M.P. is remained same. Choose the most appropriate answer from the options given below :
Not attempted
A
A, C, D only
B
B, C, D only
C
A, B, D only
D
A, B, C only
167
[JEE Main 2024, 6 Apr Shift 1, Q15] Which of the following is metamer of the given compound (X) ?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
168
[JEE Main 2024, 6 Apr Shift 1, Q8] Match List I with List II LIST I (Precipitating reagent and conditions)LIST II (Cation)A.NH4Cl+NH4OHI.Mn2+B.NH4OH+Na2CO3II.Pb2+C.NH4OH+NH4Cl+H2 S gas III.Al3+D.diluteHClIV.Sr2+\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Precipitating reagent and conditions)} & & \text{LIST II (Cation)} \\ \hline \text{A.} & {\mathrm{NH}}_4\mathrm{Cl}+{\mathrm{NH}}_4\mathrm{OH} & \text{I.} & {\mathrm{Mn}}^{2+} \\ \hline \text{B.} & {\mathrm{NH}}_4\mathrm{OH}+{\mathrm{Na}}_2{\mathrm{CO}}_3 & \text{II.} & {\mathrm{Pb}}^{2+} \\ \hline \text{C.} & {\mathrm{NH}}_4\mathrm{OH}+{\mathrm{NH}}_4\mathrm{Cl}+H_2\ S\text{ gas } & \text{III.} & {\mathrm{Al}}^{3+} \\ \hline \text{D.} & \text{dilute} \mathrm{HCl} & \text{IV.} & {\mathrm{Sr}}^{2+} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-IV, C-I, D-II
B
A-III, B-IV, C-II, D-I
C
A-IV, B-III, C-II, D-I
D
A-IV, B-III, C-I, D-II
169
[JEE Main 2024, 6 Apr Shift 1, Q9] Given below are two statements : Statement I : Gallium is used in the manufacturing of thermometers. Statement II : A thermometer containing gallium is useful for measuring the freezing point (256 K)(256\ K) of brine solution. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both Statement I and Statement II are true
B
Statement I is true but Statement II is false
C
Statement I is false but Statement II is true
D
Both Statement I and Statement II are false
170
[JEE Main 2024, 6 Apr Shift 1, Q4] At −20∘C-{20}^{\circ}C and 1 atm1\ \mathrm{atm} pressure, a cylinder is filled with equal number of H2,I2H_2,I_2 and HI\mathrm{HI} molecules for the reaction H2( g)+I2( g)⇌2HI(g)H_2(\ g)+I_2(\ g)\rightleftharpoons 2\mathrm{HI}(g) , the KpK_p for the process is x×10−1x\times {10}^{-1} . x=x= __________. [Given : R=0.082 L atm K−1 mol−1R=0.082\ L\ \mathrm{atm}{\ K}^{-1}{\ \mathrm{mol}}^{-1} ]
Not attempted
A
2
B
1
C
10
D
0.01
171
[JEE Main 2024, 6 Apr Shift 1, Q24] An ideal gas, Cˉv=52R{\bar{C}}_v=\frac{5}{2}R , is expanded adiabatically against a constant pressure of 1 atm untill it doubles in volume. If the initial temperature and pressure is 298 K298\ K and 5 atm5\ \mathrm{atm} , respectively then the final temperature is _________ KK (nearest integer). [ cˉv{\bar{c}}_v is the molar heat capacity at constant volume]
Not attempted
Your answer: —
Correct answer: 274
172
[JEE Main 2024, 6 Apr Shift 1, Q11] Match List I with List II LIST I (Compound/Species)LIST II (Shape/Geometry)A.SF4I.TetrahedralB.BrF3II.PyramidalC.BrO3−III.See sawD.NH4+IV.Bent T-Shape\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Compound/Species)} & & \text{LIST II (Shape/Geometry)} \\ \hline \text{A.} & {\mathrm{SF}}_4 & \text{I.} & \text{Tetrahedral} \\ \hline \text{B.} & {\mathrm{BrF}}_3 & \text{II.} & \text{Pyramidal} \\ \hline \text{C.} & {\mathrm{BrO}}_3^- & \text{III.} & \text{See saw} \\ \hline \text{D.} & {\mathrm{NH}}_4^+ & \text{IV.} & \text{Bent T-Shape} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-II, C-IV, D-I
B
A-III, B-IV, C-II, D-I
C
A-II, B-IV, C-III, D-I
D
A-II, B-III, C-I, D-IV
173
[JEE Main 2024, 6 Apr Shift 1, Q12] Match List I with List II LIST I (Molecule/Species)LIST II (Property/Shape)A.SO2Cl2I.ParamagneticB.NOII.DiamagneticC.NO2−III.TetrahedralD.I3−IV.Linear\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Molecule/Species)} & & \text{LIST II (Property/Shape)} \\ \hline \text{A.} & {\mathrm{SO}}_2{\mathrm{Cl}}_2 & \text{I.} & \text{Paramagnetic} \\ \hline \text{B.} & \mathrm{NO} & \text{II.} & \text{Diamagnetic} \\ \hline \text{C.} & {\mathrm{NO}}_2^- & \text{III.} & \text{Tetrahedral} \\ \hline \text{D.} & I_3^- & \text{IV.} & \text{Linear} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-II, B-III, C-I, D-IV
B
A-III, B-I, C-II, D-IV
C
A-IV, B-I, C-III, D-II
D
A-III, B-IV, C-II, D-I
174
[JEE Main 2024, 6 Apr Shift 1, Q19] Match List I with List II LIST I (Hybridization)LIST II (Orientation in Shape)A.sp3I.Trigonal bipyramidalB.dsp2II.OctahedralC.sp3dIII.TetrahedralD.sp3d2IV.Square planar\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Hybridization)} & & \text{LIST II (Orientation in Shape)} \\ \hline \text{A.} & \text{sp} {}^3 & \text{I.} & \text{Trigonal bipyramidal} \\ \hline \text{B.} & \text{dsp} {}^2 & \text{II.} & \text{Octahedral} \\ \hline \text{C.} & \text{sp} {}^3 \text{d} & \text{III.} & \text{Tetrahedral} \\ \hline \text{D.} & \text{sp} {}^3 \text{d} {}^2 & \text{IV.} & \text{Square planar} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-I, C-IV, D-II
B
A-III, B-IV, C-I, D-II
C
A-IV, B-III, C-I, D-II
D
A-II, B-I, C-IV, D-III
175
[JEE Main 2024, 6 Apr Shift 1, Q28] Number of molecules from the following which can exhibit hydrogen bonding is _________. (nearest integer)
Not attempted
Your answer: —
Correct answer: 5
176
[JEE Main 2024, 6 Apr Shift 1, Q5] The electron affinity value are negative for A. Be→Be−\mathrm{Be}\to {\mathrm{Be}}^- B. N→N−N\to N^- C. O→O2−O\to O^{2-} D. Na→Na−\mathrm{Na}\to {\mathrm{Na}}^- E. Al→Al−\mathrm{Al}\to {\mathrm{Al}}^- Choose the most appropriate answer from the options given below :
Not attempted
A
A, B, D and E only
B
D and E only
C
A and D only
D
A, B and C only
177
[JEE Main 2024, 6 Apr Shift 1, Q30] Frequency of the de-Broglie wave of electron in Bohr's first orbit of hydrogen atom is _________ ×1013 Hz\times {10}^{13}\ \mathrm{Hz} (nearest integer). [Given : RHR_H (Rydberg constant) =2.18×10−18 J,h=2.18\times {10}^{-18}\ J,h (Plank's constant) =6.6×10−34 J.s=6.6\times {10}^{-34}\ J.s .]
Not attempted
Your answer: —
Correct answer: 661
178
[JEE Main 2024, 6 Apr Shift 1, Q10] The density of ' xx ' MM solution (' xx ' molar) of NaOH\mathrm{NaOH} is 1.12 g mL−11.12\ g{\ \mathrm{mL}}^{-1} , while in molality, the concentration of the solution is 3 m3\ m ( 3 molal). Then xx is (Given : Molar mass of NaOH\mathrm{NaOH} is 40 g/mol40\ g/\mathrm{mol} )
Not attempted
A
3.8
B
3.0
C
3.5
D
2.8
179
[JEE Main 2024, 5 Apr Shift 2, Q13] Coagulation of egg, on heating is because of :
Not attempted
A
Denaturation of protein occurs
B
Biological property of protein remains unchanged
C
Breaking of the peptide linkage in the primary structure of protein occurs
D
The secondary structure of protein remains unchanged
180
[JEE Main 2024, 5 Apr Shift 2, Q29] X gX\ g of ethanamine was subjected to reaction with NaNO2/HCl{\mathrm{NaNO}}_2/\mathrm{HCl} followed by hydrolysis to liberate N2N_2 and HCl\mathrm{HCl} . The HCl\mathrm{HCl} generated was completely neutralised by 0.2 moles of NaOH.X\mathrm{NaOH}.X is _________ g.
Not attempted
Your answer: —
Correct answer: 9
181
[JEE Main 2024, 5 Apr Shift 2, Q8] Identify A and B in the given chemical reaction sequence :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
182
[JEE Main 2024, 5 Apr Shift 2, Q12] Consider the above reaction sequence and identify the major product P.
Not attempted
A
Methanoic acid
B
Methoxymethane
C
Methane
D
Methanal
183
[JEE Main 2024, 5 Apr Shift 2, Q22] The product C in the following sequence of reactions has ________ π\pi bonds.
Not attempted
Your answer: —
Correct answer: 4
184
[JEE Main 2024, 5 Apr Shift 2, Q27] In the Claisen-Schmidt reaction to prepare 351 g351\ g of dibenzalacetone using 87 g87\ g of acetone, the amount of benzaldehyde required is _________ g. (Nearest integer)
Not attempted
Your answer: —
Correct answer: 318
185
[JEE Main 2024, 5 Apr Shift 2, Q7] Identify the major product in the following reaction.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
186
[JEE Main 2024, 5 Apr Shift 2, Q14] Which one of the following reactions is NOT possible?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
187
[JEE Main 2024, 5 Apr Shift 2, Q1] The number of complexes from the following with no electrons in the t2t_2 orbital is ______. TiCl4,[MnO4]−,[FeO4]2−,[FeCl4]−,[CoCl4]2−{\mathrm{TiCl}}_4,{[{\mathrm{MnO}}_4]}^-,{[{\mathrm{FeO}}_4]}^{2-},{[{\mathrm{FeCl}}_4]}^-,{[{\mathrm{CoCl}}_4]}^{2-}
Not attempted
A
4
B
2
C
3
D
1
188
[JEE Main 2024, 5 Apr Shift 2, Q18] The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and MM is metal) involves sp3{\mathrm{sp}}^3 hybridization. The number of geometrical isomers exhibited by the complex is :
Not attempted
A
0
B
2
C
3
D
4
189
[JEE Main 2024, 5 Apr Shift 2, Q6] While preparing crystals of Mohr's salt, dil H2SO4H_2{\mathrm{SO}}_4 is added to a mixture of ferrous sulphate and ammonium sulphate, before dissolving this mixture in water, dil H2SO4H_2{\mathrm{SO}}_4 is added here to :
Not attempted
A
prevent the hydrolysis of ferrous sulphate
B
prevent the hydrolysis of ammonium sulphate
C
increase the rate of formation of crystals
D
make the medium strongly acidic
190
[JEE Main 2024, 5 Apr Shift 2, Q15] The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is _________. Ti2+,Cr2+ and V2+{\mathrm{Ti}}^{2+},{\mathrm{Cr}}^{2+}\text{ and }V^{2+}
Not attempted
A
1
B
2
C
3
D
0
191
[JEE Main 2024, 5 Apr Shift 2, Q26] The fusion of chromite ore with sodium carbonate in the presence of air leads to the formation of products AA and BB along with the evolution of CO2{\mathrm{CO}}_2 . The sum of spin-only magnetic moment values of A and B is _________ B.M. (Nearest integer) [Given atomic number : C:6,Na:11,O:8,Fe:26,Cr:24C:6,\mathrm{Na}:11,O:8,\mathrm{Fe}:26,\mathrm{Cr}:24 ]
Not attempted
Your answer: —
Correct answer: 6
192
[JEE Main 2024, 5 Apr Shift 2, Q25] Consider the following single step reaction in gas phase at constant temperature. 2 A(g)+B(g)→C(g)2{\ A}_{(g)}+B_{(g)}\to C_{(g)} The initial rate of the reaction is recorded as r1r_1 when the reaction starts with 1.5 atm1.5\ \mathrm{atm} pressure of AA and 0.7 atm0.7\ \mathrm{atm} pressure of B. After some time, the rate r2r_2 is recorded when the pressure of C becomes 0.5 atm0.5\ \mathrm{atm} . The ratio r1:r2r_1:r_2 is _________ ×10−1\times {10}^{-1} . (Nearest integer)
Not attempted
Your answer: —
Correct answer: 315
193
[JEE Main 2024, 5 Apr Shift 2, Q17] The quantity of silver deposited when one coulomb charge is passed through AgNO3{\mathrm{AgNO}}_3 solution :
Not attempted
A
0.1 g0.1\ g atom of silver
B
1 chemical equivalent of silver
C
1 g1\ g of silver
D
1 electrochemical equivalent of silver
194
[JEE Main 2024, 5 Apr Shift 2, Q19] For the electro chemical cell M∣M2+∣∣X∣X2−M|M^{2+}||X|X^{2-} If E(M2+/M)0=0.46 VE_{(M^{2+}/M)}^0=0.46\ V and E(x/x2−)0=0.34 VE_{(x/x^{2-})}^0=0.34\ V . Which of the following is correct?
Not attempted
A
Ecell=0.80 VE_{\mathrm{cell}}=0.80\ V
B
M+X→M2++X2−M+X\to M^{2+}+X^{2-} is a spontaneous reaction
C
Ecell =−0.80 VE_{\text{cell }}=-0.80\ V
D
M2++X2−→M+XM^{2+}+X^{2-}\to M+X is a spontaneous reaction
195
[JEE Main 2024, 5 Apr Shift 2, Q24] Considering acetic acid dissociates in water, its dissociation constant is 6.25×10−56.25\times {10}^{-5} . If 5 mL5\ \mathrm{mL} of acetic acid is dissolved in 1 litre water, the solution will freeze at −x×10−2∘C-x\times {10}^{-2}{}^{\circ}C , provided pure water freezes at 0∘C0{}^{\circ}C . x=x= _________. (Nearest integer) Given :(Kf)water =1.86 K kg mol−1 density of acetic acid is 1.2 g mol−1.  molar mass of water =18 g mol−1.  molar mass of acetic acid= 60 g mol−1.  density of water =1 g cm−3\begin{array}{cc}\text{Given :} & {(K_f)}_{\text{water }}=1.86\ K\ \mathrm{kg}\ \mathrm{mol}-1 \\ & \text{ density of acetic acid is }1.2\ g{\ \mathrm{mol}}^{-1}\text{. } \\ & \text{ molar mass of water }=18\ g{\ \mathrm{mol}}^{-1}\text{. } \\ & \text{ molar mass of acetic acid= }60\ g{\ \mathrm{mol}}^{-1}\text{. } \\ & \text{ density of water }=1\ g{\ \mathrm{cm}}^{-3}\end{array} Acetic acid dissociates as CH3COOH⇌CH3COO⊖+H⊕{\mathrm{CH}}_3\mathrm{COOH}\rightleftharpoons {\mathrm{CH}}_3{\mathrm{COO}}^{\ominus}+H^{\oplus}
Not attempted
Your answer: —
Correct answer: 19
196
[JEE Main 2024, 5 Apr Shift 2, Q10] Consider the given chemical reaction : Product "A" is :
Not attempted
A
picric acid
B
oxalic acid
C
adipic acid
D
acetic acid
197
[JEE Main 2024, 5 Apr Shift 2, Q3] The correct nomenclature for the following compound is :
Not attempted
A
2-carboxy-4-hydroxyhept-7-enal
B
2-formyl-4-hydroxyhept-7-enoic acid
C
2-carboxy-4-hydroxyhept-6-enal
D
2-formyl-4-hydroxyhept-6-enoic acid
198
[JEE Main 2024, 5 Apr Shift 2, Q5] Match List - I with List - II. LIST I (Pair of Compounds)LIST II (Isomerism)A.n-propanol and IsopropanolI.MetamerismB.Methoxypropane and ethoxyethaneII.Chain IsomerismC.Propanone and propanalIII.Position IsomerismD.Neopentane and IsopentaneIV.Functional Isomerism\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I (Pair of Compounds)} & & \text{LIST II (Isomerism)} \\ \hline \text{A.} & \text{n-propanol and Isopropanol} & \text{I.} & \text{Metamerism} \\ \hline \text{B.} & \text{Methoxypropane and ethoxyethane} & \text{II.} & \text{Chain Isomerism} \\ \hline \text{C.} & \text{Propanone and propanal} & \text{III.} & \text{Position Isomerism} \\ \hline \text{D.} & \text{Neopentane and Isopentane} & \text{IV.} & \text{Functional Isomerism} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
B
(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
C
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
D
(A)-(I), (B)-(III), (C)-(IV), (D)-(II)
199
[JEE Main 2024, 5 Apr Shift 2, Q23] Using the given figure, the ratio of RfR_f values of sample AA and sample CC is x×10−2x\times {10}^{-2} . Value of xx is __________.
Not attempted
Your answer: —
Correct answer: 50
200
[JEE Main 2024, 5 Apr Shift 2, Q11] The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is Tl>In>Ga>Al>B\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>B . (B) Down the group 13 electronegativity decreases from top to bottom. (C) Al\mathrm{Al} dissolves in dil. HCl\mathrm{HCl} and liberates H2H_2 but conc. HNO3{\mathrm{HNO}}_3 renders Al\mathrm{Al} passive by forming a protective oxide layer on the surface. (D) All elements of group 13 exhibits highly stable +1 oxidation state. (E) Hybridisation of Al\mathrm{Al} in [Al(H2O)6]3+[\mathrm{Al}(H_2O)_6]^{3+} ion is sp3d2{\mathrm{sp}}^3d^2 . Choose the correct answer from the options given below :
Not attempted
A
(A), (B), (C) and (E) only
B
(C) and (E) only
C
(A), (C) and (E) only
D
(A) and (C) only
201
[JEE Main 2024, 5 Apr Shift 2, Q4] Given below are two statements : Statement I : On passing HCl(g){\mathrm{HCl}}_{(g)} through a saturated solution of BaCl2{\mathrm{BaCl}}_2 , at room temperature white turbidity appears. Statement II : When HCl\mathrm{HCl} gas is passed through a saturated solution of NaCl\mathrm{NaCl} , sodium chloride is precipitated due to common ion effect. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are correct
B
Statement I is incorrect but Statement II is correct
C
Both Statement I and Statement II are incorrect
D
Statement I is correct but Statement II is incorrect
202
[JEE Main 2024, 5 Apr Shift 2, Q28] Combustion of 1 mole of benzene is expressed at C6H6(l)+152O2( g)→6CO2( g)+3H2O(l). C_6H_6(l)+\frac{15}{2}O_2(\ g)\to 6{\mathrm{CO}}_2(\ g)+3H_2O(l)\text{. } The standard enthalpy of combustion of 2 mol2\ \mathrm{mol} of benzene is −′x′kJ-'x'\mathrm{kJ} . x=x= __________. Given : 1. standard Enthalpy of formation of 1 mol1\ \mathrm{mol} of C6H6(l)C_6H_6(l) , for the reaction 6C6C (graphite) +3H2(g)→C6H6(l)+3H_2(g)\to C_6H_6(l) is 48.5 kJ mol−148.5\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} . 2. Standard Enthalpy of formation of 1 mol1\ \mathrm{mol} of CO2(g){\mathrm{CO}}_2(g) , for the reaction CC (graphite) +O2(g)→CO2(g)+O_2(g)\to {\mathrm{CO}}_2(g) is −393.5 kJ mol−1-393.5\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} . 3. Standard and Enthalpy of formation of 1 mol1\ \mathrm{mol} of H2O(l)H_2O(l) , for the reaction H2(g)+12O2(g)→H2O(l)H_2(g)+\frac{1}{2}O_2(g)\to H_2O(l) is −286 kJ mol−1-286\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} .
Not attempted
Your answer: —
Correct answer: 6535
203
[JEE Main 2024, 5 Apr Shift 2, Q2] Match List I with List II. LIST ILIST IIA.IClI.T - shapeB.ICl3II.Square pyramidalC.ClF5III.Pentagonal bipyramidalD.IF7IV.Linear\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I} & & \text{LIST II} \\ \hline \text{A.} & \mathrm{ICl} & \text{I.} & \text{T - shape} \\ \hline \text{B.} & {\mathrm{ICl}}_3 & \text{II.} & \text{Square pyramidal} \\ \hline \text{C.} & {\mathrm{ClF}}_5 & \text{III.} & \text{Pentagonal bipyramidal} \\ \hline \text{D.} & {\mathrm{IF}}_7 & \text{IV.} & \text{Linear} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(I), (B)-(IV), (C)-(III), (D)-(II)
B
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
C
(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
D
(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
204
[JEE Main 2024, 5 Apr Shift 2, Q9] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : NH3{\mathrm{NH}}_3 and NF3{\mathrm{NF}}_3 molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of NH3{\mathrm{NH}}_3 is greater than that of NF3{\mathrm{NF}}_3 . Reason (R) : In NH3{\mathrm{NH}}_3 , the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the N−HN-H bonds. FF is the most electronegative element. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
(A) is false but (R) is true
B
(A) is true but (R) is false
C
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
D
Both (A) and (R) are true and (R) is the correct explanation of (A)
205
[JEE Main 2024, 5 Apr Shift 2, Q30] Number of compounds from the following with zero dipole moment is _________. HF,H2,H2 S,CO2,NH3,BF3,CH4,CHCl3,SiF4,H2O,BeF2\mathrm{HF},H_2,H_2\ S,{\mathrm{CO}}_2,{\mathrm{NH}}_3,{\mathrm{BF}}_3,{\mathrm{CH}}_4,{\mathrm{CHCl}}_3,{\mathrm{SiF}}_4,H_2O,{\mathrm{BeF}}_2
Not attempted
Your answer: —
Correct answer: 6
206
[JEE Main 2024, 5 Apr Shift 2, Q20] Given below are two statements : Statement I : The metallic radius of Na\mathrm{Na} is 1.86 A∘1.86{\ A}^{\circ} and the ionic radius of Na+{\mathrm{Na}}^+ is lesser than 1.86 A∘1.86{\ A}^{\circ} Statement II : Ions are always smaller in size than the corresponding elements. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both Statement I and Statement II are true
B
Statement I is incorrect but Statement II is true
C
Both Statement I and Statement II are false
D
Statement I is correct but Statement II is false
207
[JEE Main 2024, 5 Apr Shift 2, Q21] In an atom, total number of electrons having quantum numbers n=4,∣ ml∣=1n=4,|{\ m}_l|=1 and ms=−12m_s=-\frac{1}{2} is _________.
Not attempted
Your answer: —
Correct answer: 6
208
[JEE Main 2024, 5 Apr Shift 2, Q16] The number of moles of methane required to produce 11 g CO2(g)11\ g{\ \mathrm{CO}}_2(g) after complete combustion is : (Given molar mass of methane in g mol−1:16g{\ \mathrm{mol}}^{-1}:16 )
Not attempted
A
0.35
B
0.25
C
0.5
D
0.75
209
[JEE Main 2024, 5 Apr Shift 1, Q5] Which of the following gives a positive test with ninhydrin ?
Not attempted
A
Polyvinyl chloride
B
Cellulose
C
Egg albumin
D
Starch
210
[JEE Main 2024, 5 Apr Shift 1, Q28] 9.3 g9.3\ g of pure aniline is treated with bromine water at room temperature to give a white precipitate of the product ' PP '. The mass of product ' PP ' obtained is 26.4 g26.4\ g . The percentage yield is ________ %.
Not attempted
Your answer: —
Correct answer: 80
211
[JEE Main 2024, 5 Apr Shift 1, Q16] Identify 'A' in the following reaction :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
212
[JEE Main 2024, 5 Apr Shift 1, Q2] Given below are two statement : Statements I : Bromination of phenol in solvent with low polarity such as CHCl3{\mathrm{CHCl}}_3 or CS2{\mathrm{CS}}_2 requires Lewis acid catalyst. Statements II : The Lewis acid catalyst polarises the bromine to generate Br+{\mathrm{Br}}^+ . In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is true but Statement II is false
B
Both Statement I and Statement II are true
C
Statement I is false but Statement II is true
D
Both Statement I and Statement II are false
213
[JEE Main 2024, 5 Apr Shift 1, Q11] For the Compounds : (A) H3C−CH2−O−CH2−CH2−CH3H_3C-{\mathrm{CH}}_2-O-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3 (B) H3C−CH2−CH2−CH2−CH3H_3C-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3 (C) (D) The increasing order of boiling point is : Choose the correct answer from the options given below :
Not attempted
A
(D)<(C)<(A)<(B)(D)<(C)<(A)<(B)
B
(B)<(A)<(C)<(D)(B)<(A)<(C)<(D)
C
(A)<(B)<(C)<(D)(A)<(B)<(C)<(D)
D
(B)<(A)<(D)<(C)(B)<(A)<(D)<(C)
214
[JEE Main 2024, 5 Apr Shift 1, Q20] Identify compound (Z) in the following reaction sequence.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
215
[JEE Main 2024, 5 Apr Shift 1, Q29] Consider the given chemical reaction sequence : Total sum of oxygen atoms in Product A and Product B are ________.
Not attempted
Your answer: —
Correct answer: 14
216
[JEE Main 2024, 5 Apr Shift 1, Q24] The number of halobenzenes from the following that can be prepared by Sandmeyer's reaction is _________
Not attempted
Your answer: —
Correct answer: 2
217
[JEE Main 2024, 5 Apr Shift 1, Q12] The correct order of ligands arranged in increasing field strength.
Not attempted
A
F−<Br−<I−<NH3F^-<{\mathrm{Br}}^-<I^-<{\mathrm{NH}}_3
B
H2O<−OH<CN−<NH3H_2O<{}^-\mathrm{OH}<{\mathrm{CN}}^-<{\mathrm{NH}}_3
C
Br−<F−<H2O<NH3{\mathrm{Br}}^-<F^-<H_2O<{\mathrm{NH}}_3
D
Cl−<−OH<Br−<CN−{\mathrm{Cl}}^-<{}^-\mathrm{OH}<{\mathrm{Br}}^-<{\mathrm{CN}}^-
218
[JEE Main 2024, 5 Apr Shift 1, Q14] Which one of the following complexes will exhibit the least paramagnetic behaviour ? [Atomic number, Cr=24,Mn=25,Fe=26,Co=27\mathrm{Cr}=24,\mathrm{Mn}=25,\mathrm{Fe}=26,\mathrm{Co}=27 ]
Not attempted
A
[Fe(H2O)6]2+{[\mathrm{Fe}{(H_2O)}_6]}^{2+}
B
[Mn(H2O)6]2+{[\mathrm{Mn}{(H_2O)}_6]}^{2+}
C
[Co(H2O)6]2+{[\mathrm{Co}{(H_2O)}_6]}^{2+}
D
[Cr(H2O)6]2+{[\mathrm{Cr}{(H_2O)}_6]}^{2+}
219
[JEE Main 2024, 5 Apr Shift 1, Q8] The metal that shows highest and maximum number of oxidation state is :
Not attempted
A
Co
B
Mn
C
Fe
D
Ti
220
[JEE Main 2024, 5 Apr Shift 1, Q21] The spin-only magnetic moment value of the ion among Ti2+,V2+,Co3+{\mathrm{Ti}}^{2+},V^{2+},{\mathrm{Co}}^{3+} and Cr2+{\mathrm{Cr}}^{2+} , that acts as strong oxidising agent in aqueous solution is _________ BM (Near integer). (Given atomic numbers : Ti:22, V:23,Cr:24,Co:27\mathrm{Ti}:22,\ V:23,\mathrm{Cr}:24,\mathrm{Co}:27 )
Not attempted
Your answer: —
Correct answer: 5
221
[JEE Main 2024, 5 Apr Shift 1, Q30] During Kinetic study of reaction 2A+B→C+D2A+B\to C+D , the following results were obtained : A[M]B[M]initial rate of formation ofDI0.10.16.0×10−3II0.30.27.2×10−2III0.30.42.88×10−1IV0.40.12.40×10−2\displaystyle\begin{array}{|l|l|l|l|}\hline & A[M] & B[M] & \text{initial rate of formation of} D \\ \hline \text{I} & \text{0.1} & \text{0.1} & 6.0\times {10}^{-3} \\ \hline \text{II} & \text{0.3} & \text{0.2} & 7.2\times {10}^{-2} \\ \hline \text{III} & \text{0.3} & \text{0.4} & 2.88\times {10}^{-1} \\ \hline \text{IV} & \text{0.4} & \text{0.1} & 2.40\times {10}^{-2} \\ \hline \end{array} Based on above data, overall order of the reaction is _________.
Not attempted
Your answer: —
Correct answer: 3
222
[JEE Main 2024, 5 Apr Shift 1, Q15] Molar ionic conductivities of divalent cation and anion are 57 S cm2 mol−157{\ S\ \mathrm{cm}}^2{\ \mathrm{mol}}^{-1} and 73 S cm2 mol−173{\ S\ \mathrm{cm}}^2{\ \mathrm{mol}}^{-1} respectively. The molar conductivity of solution of an electrolyte with the above cation and anion will be:
Not attempted
A
187 S cm2 mol−1187\ S{\ \mathrm{cm}}^2{\ \mathrm{mol}}^{-1}
B
260 S cm2 mol−1260\ S{\ \mathrm{cm}}^2{\ \mathrm{mol}}^{-1}
C
65 S cm2 mol−165\ S{\ \mathrm{cm}}^2{\ \mathrm{mol}}^{-1}
D
130 S cm2 mol−1130\ S{\ \mathrm{cm}}^2{\ \mathrm{mol}}^{-1}
223
[JEE Main 2024, 5 Apr Shift 1, Q18] The reaction at cathode in the cells commonly used in clocks involves.
Not attempted
A
oxidation of Mn\mathrm{Mn} from +2 to +7
B
reduction of Mn\mathrm{Mn} from +4 to +3
C
oxidation of Mn\mathrm{Mn} from +3 to +4
D
reduction of Mn\mathrm{Mn} from +7 to +2
224
[JEE Main 2024, 5 Apr Shift 1, Q25] An artificial cell is made by encapsulating 0.2 M0.2\ M glucose solution within a semipermeable membrane. The osmotic pressure developed when the artificial cell is placed within a 0.05 M0.05\ M solution of NaCl\mathrm{NaCl} at 300 K300\ K is ________ ×10−1\times {10}^{-1} bar. (nearest integer). [Given : R=0.083 L bar mol−1 K−1R=0.083\ L\ \mathrm{bar}{\ \mathrm{mol}}^{-1}{\ K}^{-1} ] Assume complete dissociation of NaCl\mathrm{NaCl}
Not attempted
Your answer: —
Correct answer: 25
225
[JEE Main 2024, 5 Apr Shift 1, Q4] Given below are two statements : Statement I : Nitration of benzene involves the following step - Statement II : Use of Lewis base promotes the electrophilic substitution of benzene. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are incorrect
B
Statement I is correct but Statement II is incorrect
C
Statement I is incorrect but Statement II is correct
D
Both Statement I and Statement II are correct
226
[JEE Main 2024, 5 Apr Shift 1, Q7] Given below are two statements: Statement I: In group 13, the stability of +1 oxidation state increases down the group. Statement II : The atomic size of gallium is greater than that of aluminium. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is incorrect but Statement II is correct
B
Statement I is correct but Statement II is incorrect
C
Both Statement I and Statement II are correct
D
Both Statement I and Statement II are incorrect
227
[JEE Main 2024, 5 Apr Shift 1, Q13] The number of neutrons present in the more abundant isotope of boron is ' xx '. Amorphous boron upon heating with air forms a product, in which the oxidation state of boron is ' yy '. The value of x+yx+y is _________ .
Not attempted
A
9
B
6
C
4
D
3
228
[JEE Main 2024, 5 Apr Shift 1, Q23] In a borax bead test under hot condition, a metal salt (one from the given) is heated at point B of the flame, resulted in green colour salt bead. The spin-only magnetic moment value of the salt is _______ BM (Nearest integer) [Given atomic number of Cu=29,Ni=28,Mn=25,Fe=26\mathrm{Cu}=29,\mathrm{Ni}=28,\mathrm{Mn}=25,\mathrm{Fe}=26 ]
Not attempted
Your answer: —
Correct answer: 6
229
[JEE Main 2024, 5 Apr Shift 1, Q19] The following reaction occurs in the Blast furnance where iron ore is reduced to iron metal Fe2O3(s)+3CO(g)⇌Fe(l)+3CO2(g){\mathrm{Fe}}_2O_{3(s)}+3{\mathrm{CO}}_{(g)}\rightleftharpoons {\mathrm{Fe}}_{(l)}+3{\mathrm{CO}}_{2(g)} Using the Le-chatelier's principle, predict which one of the following will not disturb the equilibrium.
Not attempted
A
Addition of CO2{\mathrm{CO}}_2
B
Removal of CO\mathrm{CO}
C
Addition of Fe2O3{\mathrm{Fe}}_2O_3
D
Removal of CO2{\mathrm{CO}}_2
230
[JEE Main 2024, 5 Apr Shift 1, Q6] Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) : Enthalpy of neutralisation of strong monobasic acid with strong monoacidic base is always −57 kJ mol−1-57\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} Reason (R) : Enthalpy of neutralisation is the amount of heat liberated when one mole of H+H^+ ions furnished by acid combine with one mole of −OH{}^-\mathrm{OH} ions furnished by base to form one mole of water. In the light of the above statements, choose the correct answer from the options given below.
Not attempted
A
(A) is true but (R) is false
B
Both (A) and (R) are true and (R) is the correct explanation of (A)
C
Both (A) and (R) are true but (R) is not the correct explanation of (A)
D
(A) is false but (R) is true
231
[JEE Main 2024, 5 Apr Shift 1, Q22] The heat of combustion of solid benzoic acid at constant volume is −321.30 kJ-321.30\ \mathrm{kJ} at 27∘C{27}^{\circ}C . The heat of combustion at constant pressure is (−321.30−xR) kJ(-321.30-xR)\ \mathrm{kJ} , the value of xx is __________.
Not attempted
Your answer: —
Correct answer: 150
232
[JEE Main 2024, 5 Apr Shift 1, Q1] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cis form of alkene is found to be more polar than the trans form. Reason (R) : Dipole moment of trans isomer of 2-butene is zero. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
(A) is true but (R) is false
B
(A) is false but (R) is true
C
Both (A)(\mathbf{A}) and (R)(\mathbf{R}) are true and (R)(\mathbf{R}) is the correct explanation of (A)(\mathbf{A})
D
Both (A)(\mathbf{A}) and (R)(\mathbf{R}) are true but (R)(\mathbf{R}) is NOT the correct explanation of (A)(\mathbf{A})
233
[JEE Main 2024, 5 Apr Shift 1, Q9] Number of σ\sigma and π\pi bonds present in ethylene molecule is respectively :
Not attempted
A
3 and 1
B
5 and 1
C
4 and 1
D
5 and 2
234
[JEE Main 2024, 5 Apr Shift 1, Q26] In the lewis dot structure for NO2−{\mathrm{NO}}_2^- , total number of valence electrons around nitrogen is _________.
Not attempted
Your answer: —
Correct answer: 8
235
[JEE Main 2024, 5 Apr Shift 1, Q17] The statement(s) that are correct about the species O2−,F−,Na+O^{2-},F^-,{\mathrm{Na}}^+ and Mg2+{\mathrm{Mg}}^{2+} . (A) All are isoelectronic (B) All have the same nuclear charge (C) O2−O^{2-} has the largest ionic radii (D) Mg2+{\mathrm{Mg}}^{2+} has the smallest ionic radii Choose the most appropriate answer from the options given below :
Not attempted
A
(C) and (D) only
B
(A), (C) and (D) only
C
(B), (C) and (D) only
D
(A), (B), (C) and (D)
236
[JEE Main 2024, 5 Apr Shift 1, Q27] The value of Rydberg constant (RH)(R_H) is 2.18×10−18 J2.18\times {10}^{-18}\ J . The velocity of electron having mass 9.1×10−31 kg9.1\times {10}^{-31}\ \mathrm{kg} in Bohr's first orbit of hydrogen atom = ________ ×105 ms−1\times {10}^5{\ \mathrm{ms}}^{-1} (nearest integer).
Not attempted
Your answer: —
Correct answer: 22
237
[JEE Main 2024, 5 Apr Shift 1, Q3] The incorrect postulates of the Dalton's atomic theory are : (A) Atoms of different elements differ in mass. (B) Matter consists of divisible atoms. (C) Compounds are formed when atoms of different element combine in a fixed ratio. (D) All the atoms of given element have different properties including mass. (E) Chemical reactions involve reorganisation of atoms. Choose the correct answer from the options given below :
Not attempted
A
(B), (D) only
B
(A), (B), (D) only
C
(B), (D), (E) only
D
(C), (D), (E) only
238
[JEE Main 2024, 5 Apr Shift 1, Q10] An organic compound has 42.1%42.1\% carbon, 6.4%6.4\% hydrogen and remainder is oxygen. If its molecular weight is 342 , then its molecular formula is :
Not attempted
A
C14H20O10C_{14}H_{20}O_{10}
B
C12H22O11C_{12}H_{22}O_{11}
C
C12H20O12C_{12}H_{20}O_{12}
D
C11H18O12C_{11}H_{18}O_{12}
239
[JEE Main 2024, 4 Apr Shift 2, Q2] Match List I with List II LIST ILIST IIA.α- Glucose andα- GalactoseI.Functional isomersB.α - Glucose and β - Glucose II.HomologousC.α - Glucose and α - Fructose III.AnomersD.α - Glucose and α - Ribose IV.Epimers\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I} & & \text{LIST II} \\ \hline \text{A.} & \alpha \text{- Glucose and} \alpha \text{- Galactose} & \text{I.} & \text{Functional isomers} \\ \hline \text{B.} & \alpha \text{ - Glucose and }\beta \text{ - Glucose } & \text{II.} & \text{Homologous} \\ \hline \text{C.} & \alpha \text{ - Glucose and }\alpha \text{ - Fructose } & \text{III.} & \text{Anomers} \\ \hline \text{D.} & \alpha \text{ - Glucose and }\alpha \text{ - Ribose } & \text{IV.} & \text{Epimers} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-III, B-IV, C-II, D-I
B
A-IV, B-III, C-I, D-II
C
A-III, B-IV, C-I, D-II
D
A-IV, B-III, C-II, D-I
240
[JEE Main 2024, 4 Apr Shift 2, Q24] From 6.55 g6.55\ g of aniline, the maximum amount of acetanilide that can be prepared will be ________ ×10−1 g\times {10}^{-1}\ g .
Not attempted
Your answer: —
Correct answer: 95
241
[JEE Main 2024, 4 Apr Shift 2, Q29] Phthalimide is made to undergo following sequence of reactions. Total number of π\pi bonds present in product 'P' is/are ________.
Not attempted
Your answer: —
Correct answer: 8
242
[JEE Main 2024, 4 Apr Shift 2, Q20] In the above chemical reaction sequence " AA " and " BB " respectively are
Not attempted
A
H2O,H+H_2O,H^+ and NaOH(alc)/I2{\mathrm{NaOH}}_{(\mathrm{alc})}/I_2
B
O3,Zn/H2OO_3,\mathrm{Zn}/H_2O and KMnO4{\mathrm{KMnO}}_4
C
H2O,H+H_2O,H^+ and KMnO4{\mathrm{KMnO}}_4
D
O3,Zn/H2OO_3,\mathrm{Zn}/H_2O and NaOH(alc)/I2{\mathrm{NaOH}}_{(\mathrm{alc})}/I_2
243
[JEE Main 2024, 4 Apr Shift 2, Q13] CH3−CH2−CH2−Br+NaOH⟶C2H5OH Product ’A’ {\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Br}+\mathrm{NaOH}\overset{C_2H_5\mathrm{OH}}{\longrightarrow }\text{ Product ’A’ } Consider the above reactions, identify product B and product C.
Not attempted
A
B=C=1B=C=1 -Propanol
B
B=1B=1 -Propanol C=2C=2 -Propanol
C
B=C=2B=C=2 -Propanol
D
B=2B=2 -Propanol C=1C=1 -Propanol
244
[JEE Main 2024, 4 Apr Shift 2, Q16] Common name of Benzene - 1,2 - diol is -
Not attempted
A
catechol
B
quinol
C
o-cresol
D
resorcinol
245
[JEE Main 2024, 4 Apr Shift 2, Q28] Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and π\pi electrons is __________.
Not attempted
Your answer: —
Correct answer: 11
246
[JEE Main 2024, 4 Apr Shift 2, Q6] Product P is
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
247
[JEE Main 2024, 4 Apr Shift 2, Q18] Find out the major product formed from the following reaction. [Me:−CH3][\mathrm{Me}:-{\mathrm{CH}}_3]
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
248
[JEE Main 2024, 4 Apr Shift 2, Q3] If an iron (III) complex with the formula [Fe(NH3)x(CN)y]−{[\mathrm{Fe}{({\mathrm{NH}}_3)}_x(\mathrm{CN})_y]}^- has no electron in its ege_g orbital, then the value of x+yx+y is
Not attempted
A
6
B
4
C
3
D
5
249
[JEE Main 2024, 4 Apr Shift 2, Q4] The number of unpaired d-electrons in [Co(H2O)6]3+{[\mathrm{Co}{(H_2O)}_6]}^{3+} is ________.
Not attempted
A
0
B
2
C
1
D
4
250
[JEE Main 2024, 4 Apr Shift 2, Q15] A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of $3.86 BM3.86 \mathrm{~BM}$. The atomic number of the metal is
Not attempted
A
22
B
23
C
26
D
25
251
[JEE Main 2024, 4 Apr Shift 2, Q30] A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula M2OnM_2O_n (where n=3,4,5n=3,4,5 ). The 'spin-only' magnetic moment value of the amphoteric oxide from the above oxides is _________ BM\mathrm{BM} (near integer) (Given atomic number: Sc:21,Ti:22, V:23,Cr:24,Mn:25,Fe:26,Co:27,Ni:28,Cu:29,Zn:30\mathrm{Sc}:21,\mathrm{Ti}:22,\ V:23,\mathrm{Cr}:24,\mathrm{Mn}:25,\mathrm{Fe}:26,\mathrm{Co}:27,\mathrm{Ni}:28,\mathrm{Cu}:29,\mathrm{Zn}:30 )
Not attempted
Your answer: —
Correct answer: 0
252
[JEE Main 2024, 4 Apr Shift 2, Q26] Consider the following reaction, the rate expression of which is given below A+B→C rate =k[A]1/2[ B]1/2\begin{array}{cc} & A+B\to C \\ & \text{ rate }=k[A]^{1/2}[\ B]^{1/2}\end{array} The reaction is initiated by taking 1 M1\ M concentration of AA and BB each. If the rate constant (k)(k) is 4.6×10−2 s−14.6\times {10}^{-2}{\ s}^{-1} , then the time taken for AA to become 0.1 M0.1\ M is _________ sec. (nearest integer)
Not attempted
Your answer: —
Correct answer: 50
253
[JEE Main 2024, 4 Apr Shift 2, Q1] Fuel cell, using hydrogen and oxygen as fuels, A. has been used in spaceship B. has as efficiency of 40%40\% to produce electricity C. uses aluminum as catalysts D. is eco-friendly E. is actually a type of Galvanic cell only Choose the correct answer from the options given below:
Not attempted
A
A, D, E only
B
A, B, C only
C
A, B, D only
D
A, B, D, E only
254
[JEE Main 2024, 4 Apr Shift 2, Q9] For a strong electrolyte, a plot of molar conductivity against (concentration) 1/2{}^{1/2} is a straight line, with a negative slope, the correct unit for the slope is
Not attempted
A
Scm2 mol−3/2 LS{\mathrm{cm}}^2{\ \mathrm{mol}}^{-3/2}\ L
B
Scm2 mol−3/2 L−1/2S\mathrm{cm}{}^2{\ \mathrm{mol}}^{-3/2}{\ L}^{-1/2}
C
Scm2 mol−1 L1/2S\mathrm{cm}{}^2{\ \mathrm{mol}}^{-1}{\ L}^{1/2}
D
Scm2 mol−3/2 L1/2S{\mathrm{cm}}^2{\ \mathrm{mol}}^{-3/2}{\ L}^{1/2}
255
[JEE Main 2024, 4 Apr Shift 2, Q25] 2.7 kg2.7\ \mathrm{kg} of each of water and acetic acid are mixed. The freezing point of the solution will be −x∘C-x^{\circ}C . Consider the acetic acid does not dimerise in water, nor dissociates in water. x=x= ________ (nearest integer) [Given: Molar mass of water =18 g mol−1=18\ g{\ \mathrm{mol}}^{-1} , acetic acid =60 g mol−1=60\ g{\ \mathrm{mol}}^{-1} KfH2O:1.86 K kg mol−1{}^{K_f}H_2O:1.86\ K\ \mathrm{kg}{\ \mathrm{mol}}^{-1} KfK_f acetic acid: 3.90 K kg mol−13.90\ K\ \mathrm{kg}{\ \mathrm{mol}}^{-1} freezing point: H2O=273 KH_2O=273\ K , acetic acid =290 K=290\ K ]
Not attempted
Your answer: —
Correct answer: 31
256
[JEE Main 2024, 4 Apr Shift 2, Q5] Correct order of stability of carbanion is :
Not attempted
A
d > c > b > a
B
c > b > d > a
C
d > a > c > b
D
a > b > c > d
257
[JEE Main 2024, 4 Apr Shift 2, Q19] The adsorbent used in adsorption chromatography is/are - A. silica gel B. alumina C. quick lime D. magnesia Choose the most appropriate answer from the options given below :
Not attempted
A
C and D only
B
A only
C
B only
D
A and B only
258
[JEE Main 2024, 4 Apr Shift 2, Q23] The total number of 'sigma' and 'pi' bonds in 2-oxohex-4-ynoic acid is ______.
Not attempted
Your answer: —
Correct answer: 18
259
[JEE Main 2024, 4 Apr Shift 2, Q10] When MnO2{\mathrm{MnO}}_2 and H2SO4H_2{\mathrm{SO}}_4 is added to a salt (A)(A) , the greenish yellow gas liberated as salt (A) is :
Not attempted
A
NH4Cl{\mathrm{NH}}_4\mathrm{Cl}
B
CaI2{\mathrm{CaI}}_2
C
KNO3{\mathrm{KNO}}_3
D
NaBr\mathrm{NaBr}
260
[JEE Main 2024, 4 Apr Shift 2, Q17] The equilibrium constant for the reaction SO3( g)⇌SO2( g)+12O2( g){\mathrm{SO}}_3(\ g)\rightleftharpoons {\mathrm{SO}}_2(\ g)+\frac{1}{2}O_2(\ g) is Kc=4.9×10−2K_c=4.9\times {10}^{-2} . The value of KcK_c for the reaction given below is 2SO2( g)+O2( g)⇌2SO3( g)2{\mathrm{SO}}_2(\ g)+O_2(\ g)\rightleftharpoons 2{\mathrm{SO}}_3(\ g) is :
Not attempted
A
49
B
416
C
41.6
D
4.9
261
[JEE Main 2024, 4 Apr Shift 2, Q27] Three moles of an ideal gas are compressed isothermally from 60 L60\ L to 20 L20\ L using constant pressure of 5 atm5\ \mathrm{atm} . Heat exchange QQ for the compression is - _________ Lit. atm.
Not attempted
Your answer: —
Correct answer: 200
262
[JEE Main 2024, 4 Apr Shift 2, Q11] The correct statement/s about Hydrogen bonding is/are A. Hydrogen bonding exists when H is covalently bonded to the highly electro negative atom. B. Intermolecular H bonding is present in oo -nitro phenol C. Intramolecular HH bonding is present in HF. D. The magnitude of HH bonding depends on the physical state of the compound. E. H-bonding has powerful effect on the structure and properties of compounds Choose the correct answer from the options given below:
Not attempted
A
A, B, C only
B
A only
C
A, D, E only
D
A, B, D only
263
[JEE Main 2024, 4 Apr Shift 2, Q14] The number of species from the following that have pyramidal geometry around the central atom is _________ S2O32−,SO42−,SO32−,S2O72−S_2O_3^{2-},{\mathrm{SO}}_4^{2-},{\mathrm{SO}}_3^{2-},S_2O_7^{2-}
Not attempted
A
4
B
3
C
2
D
1
264
[JEE Main 2024, 4 Apr Shift 2, Q22] Number of compounds / species from the following with non-zero dipole moment is _________. BeCl2,BCl3,NF3,XeF4,CCl4,H2O,H2 S,HBr,CO2,H2,HCl{\mathrm{BeCl}}_2,{\mathrm{BCl}}_3,{\mathrm{NF}}_3,{\mathrm{XeF}}_4,{\mathrm{CCl}}_4,H_2O,H_2\ S,\mathrm{HBr},{\mathrm{CO}}_2,H_2,\mathrm{HCl}
Not attempted
Your answer: —
Correct answer: 5
265
[JEE Main 2024, 4 Apr Shift 2, Q7] The correct order of the first ionization enthalpy is
Not attempted
A
Ga>Al>B\mathrm{Ga}>\mathrm{Al}>B
B
Tl>Ga>Al\mathrm{Tl}>\mathrm{Ga}>\mathrm{Al}
C
Al>Ga>Tl\mathrm{Al}>\mathrm{Ga}>\mathrm{Tl}
D
B>Al>GaB>\mathrm{Al}>\mathrm{Ga}
266
[JEE Main 2024, 4 Apr Shift 2, Q8] Given below are two statements : Statement I : The correct order of first ionization enthalpy values of Li,Na,F\mathrm{Li},\mathrm{Na},F and Cl\mathrm{Cl} is Na<Li<Cl<F\mathrm{Na}<\mathrm{Li}<\mathrm{Cl}<F . Statement II : The correct order of negative electron gain enthalpy values of Li,Na,F\mathrm{Li},\mathrm{Na},F and Cl\mathrm{Cl} is Na<Li<F<Cl\mathrm{Na}<\mathrm{Li}<F<\mathrm{Cl} In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is true but Statement II is false
B
Both Statement I and Statement II are false
C
Statement I is false but Statement II is true
D
Both Statement I and Statement II are true
267
[JEE Main 2024, 4 Apr Shift 2, Q21] The maximum number of orbitals which can be identified with n=4n=4 and ml=0m_l=0 is _________.
Not attempted
Your answer: —
Correct answer: 4
268
[JEE Main 2024, 4 Apr Shift 2, Q12] Choose the Incorrect Statement about Dalton's Atomic Theory
Not attempted
A
Compounds are formed when atoms of different elements combine in any ratio.
B
Matter consists of indivisible atoms.
C
chemical reactions involve reorganization of atoms
D
All the atoms of a given element have identical properties including identical mass.
269
[JEE Main 2024, 4 Apr Shift 1, Q9] Which of the following is the correct structure of L-Glucose?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
270
[JEE Main 2024, 4 Apr Shift 1, Q25] Xg\mathrm{Xg} of ethylamine is subjected to reaction with NaNO2/HCl{\mathrm{NaNO}}_2/\mathrm{HCl} followed by water; evolved dinitrogen gas which occupied 2.24 L2.24\ L volume at STP. X is _________ ×10−1 g\times {10}^{-1}\ g .
Not attempted
Your answer: —
Correct answer: 45
271
[JEE Main 2024, 4 Apr Shift 1, Q3] Given below are two statements : Statements I : Acidity of α\alpha -hydrogens of aldehydes and ketones is responsible for Aldol reaction. Statement II : Reaction between benzaldehyde and ethanal will NOT give Cross - Aldol product. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are incorrect
B
Statement I is correct but Statement II is incorrect
C
Both Statement I and Statement II are correct
D
Statement I is incorrect but Statement II is correct
272
[JEE Main 2024, 4 Apr Shift 1, Q10] Identify the product in the following reaction:
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
273
[JEE Main 2024, 4 Apr Shift 1, Q26] The number of the correct reaction(s) among the following is _______.
Not attempted
Your answer: —
Correct answer: 1
274
[JEE Main 2024, 4 Apr Shift 1, Q5] Identify B and C and how are A and C related?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
275
[JEE Main 2024, 4 Apr Shift 1, Q6] Identify the correct set of reagents or reaction conditions ' XX ' and ' YY ' in the following set of transformation.
Not attempted
A
X=X= dil.aq. NaOH,20∘C,Y=HBr/\mathrm{NaOH},{20}^{\circ}C, Y=\mathrm{HBr}/ acetic acid
B
X=X= conc.alc. NaOH,80∘C,Y=Br2/CHCl3\mathrm{NaOH},{80}^{\circ}C,Y={\mathrm{Br}}_2/{\mathrm{CHCl}}_3
C
X=X= dil.aq. NaOH,20∘C,Y=Br2/CHCl3\mathrm{NaOH},{20}^{\circ}C, Y={\mathrm{Br}}_2/{\mathrm{CHCl}}_3
D
X=X= conc.alc. NaOH,80∘C,Y=HBr/\mathrm{NaOH},{80}^{\circ}C,Y=\mathrm{HBr}/ acetic acid
276
[JEE Main 2024, 4 Apr Shift 1, Q1] Number of complexes from the following with even number of unpaired " dd " electrons is ________ [V(H2O)6]3+,[Cr(H2O)6]2+,[Fe(H2O)6]3+,[Ni(H2O)6]3+,[Cu(H2O)6]2+[V(H_2O)_6]^{3+},[\mathrm{Cr}(H_2O)_6]^{2+},[\mathrm{Fe}(H_2O)_6]^{3+},[\mathrm{Ni}(H_2O)_6]^{3+},[\mathrm{Cu}(H_2O)_6]^{2+} [Given atomic numbers: V=23,Cr=24,Fe=26,Ni=28Cu=29V=23,\mathrm{Cr}=24,\mathrm{Fe}=26,\mathrm{Ni}=28\mathrm{Cu}=29 ]
Not attempted
A
1
B
5
C
2
D
4
277
[JEE Main 2024, 4 Apr Shift 1, Q12] The correct sequence of ligands in the order of decreasing field strength is :
Not attempted
A
NCS−>EDTA4−>CN−>CO{\mathrm{NCS}}^->{\mathrm{EDTA}}^{4-}>{\mathrm{CN}}^->\mathrm{CO}
B
CO>H2O>F−>S2−\mathrm{CO}>H_2O>F^->S^{2-}
C
S2−>−OH>EDTA4−>COS^{2-}>{}^-\mathrm{OH}>{\mathrm{EDTA}}^{4-}>\mathrm{CO}
D
−OH>F−>NH3>CN−{}^-\mathrm{OH}>F^->{\mathrm{NH}}_3>{\mathrm{CN}}^-
278
[JEE Main 2024, 4 Apr Shift 1, Q8] The element which shows only one oxidation state other than its elemental form is :
Not attempted
A
Nickel
B
Titanium
C
Cobalt
D
Scandium
279
[JEE Main 2024, 4 Apr Shift 1, Q30] Consider the following reaction MnO2+KOH+O2→A+H2O. {\mathrm{MnO}}_2+\mathrm{KOH}+O_2\to A+H_2O\text{. } Product ' AA ' in neutral or acidic medium disproportionate to give products ' BB ' and ' CC ' along with water. The sum of spin-only magnetic moment values of BB and CC is ________ BM. (nearest integer) (Given atomic number of Mn\mathrm{Mn} is 25)
Not attempted
Your answer: —
Correct answer: 4
280
[JEE Main 2024, 4 Apr Shift 1, Q23] Consider the following transformation involving first order elementary reaction in each step at constant temperature as shown below. Some details of the above reactions are listed below. StepRate constant (sec−1)Activation energy (kJ mol−1)1k13002k22003k3Ea3\displaystyle\begin{array}{|l|l|l|}\hline \text{Step} & \text{Rate constant (sec} {}^{-1} \text{)} & \text{Activation energy (kJ mol} {}^{-1} \text{)} \\ \hline \text{1} & k_1 & \text{300} \\ \hline \text{2} & k_2 & \text{200} \\ \hline \text{3} & k_3 & {\mathrm{Ea}}_3 \\ \hline \end{array} If the overall rate constant of the above transformation (k) is given as k=k1k2k3k=\frac{k_1k_2}{k_3} and the overall activation energy (Ea)(E_a) is 400 kJ mol m−1400\ \mathrm{kJ}\ \mathrm{mol}{\ m}^{-1} , then the value of Ea3{\mathrm{Ea}}_3 is ________ integer)
Not attempted
Your answer: —
Correct answer: 100
281
[JEE Main 2024, 4 Apr Shift 1, Q15] One of the commonly used electrode is calomel electrode. Under which of the following categories, calomel electrode comes?
Not attempted
A
Metal ion - Metal electrodes
B
Oxidation - Reduction electrodes
C
Metal - Insoluble Salt - Anion electrodes
D
Gas - Ion electrodes
282
[JEE Main 2024, 4 Apr Shift 1, Q19] What pressure (bar) of H2H_2 would be required to make emf of hydrogen electrode zero in pure water at 25∘C{25}^{\circ}C ?
Not attempted
A
0.5
B
10−14{10}^{-14}
C
1
D
10−7{10}^{-7}
283
[JEE Main 2024, 4 Apr Shift 1, Q21] 2.5 g2.5\ g of a non-volatile, non-electrolyte is dissolved in 100 g100\ g of water at 25∘C{25}^{\circ}C . The solution showed a boiling point elevation by 2∘C2^{\circ}C . Assuming the solute concentration is negligible with respect to the solvent concentration, the vapor pressure of the resulting aqueous solution is _________ mm\mathrm{mm} of Hg\mathrm{Hg} (nearest integer) [Given : Molal boiling point elevation constant of water (Kb)=0.52 K.kgmol−1(K_b)=0.52\ K.\mathrm{kg}{\mathrm{mol}}^{-1} , 1 atm1\ \mathrm{atm} pressure =760 mm=760\ \mathrm{mm} of Hg\mathrm{Hg} , molar mass of water =18 g mol−1]=18\ g{\ \mathrm{mol}}^{-1}]
Not attempted
Your answer: —
Correct answer: 707
284
[JEE Main 2024, 4 Apr Shift 1, Q28] The number of different chain isomers for C 7{}_7 H 16{}_{16} is __________.
Not attempted
Your answer: —
Correct answer: 9
285
[JEE Main 2024, 4 Apr Shift 1, Q2] What will be the decreasing order of basic strength of the following conjugate bases? −OH,ROˉ,CH3COOˉ,Cl{}^-\mathrm{OH},R\bar{O},{\mathrm{CH}}_3\mathrm{CO}\bar{O},\mathrm{Cl}
Not attempted
A
CIˉ>ROˉ>−OH>CH3COOˉC\bar{I}>R\bar{O}>{}^-\mathrm{OH}>{\mathrm{CH}}_3\mathrm{CO}\bar{O}
B
−OH>ROˉ>CH3COOˉ>C1ˉ{}^-\mathrm{OH}>R\bar{O}>{\mathrm{CH}}_3\mathrm{CO}\bar{O}>C\bar{1}
C
CIˉ>−OH>ROˉ>CH3COOˉC\bar{I}>{}^-\mathrm{OH}>R\bar{O}>{\mathrm{CH}}_3\mathrm{CO}\bar{O}
D
ROˉ>−OH>CH3COOˉ>C1ˉR\bar{O}>{}^-\mathrm{OH}>{\mathrm{CH}}_3\mathrm{CO}\bar{O}>C\bar{1}
286
[JEE Main 2024, 4 Apr Shift 1, Q4] Match List I with List II : LIST I Mechanism stepsLIST II EffectA.step (A) in figureI.−E effectB.step (B) in figureII.−R effectC.step (C) in figureIII.+E effectD.step (D) in figureIV.+R effect\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{LIST I Mechanism steps} & & \text{LIST II Effect} \\ \hline \text{A.} & \text{step (A) in figure} & \text{I.} & - \text{E effect} \\ \hline \text{B.} & \text{step (B) in figure} & \text{II.} & - \text{R effect} \\ \hline \text{C.} & \text{step (C) in figure} & \text{III.} & + \text{E effect} \\ \hline \text{D.} & \text{step (D) in figure} & \text{IV.} & + \text{R effect} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
(A) (B) (C) (D)
A
(A) - (I), (B) - (II), (C) - (IV), (D) - (III)
B
(A) - (II), (B) - (IV), (C) - (III), (D) - (I)
C
(A) - (III), (B) - (I), (C) - (II), (D) - (IV)
D
(A) - (IV), (B) - (III), (C) - (I), (D) - (II)
287
[JEE Main 2024, 4 Apr Shift 1, Q14] Which among the following is incorrect statement?
Not attempted
A
The electromeric effect is, temporary effect
B
Hydrogen ion (H+)(H^+) shows negative electromeric effect
C
The organic compound shows electromeric effect in the presence of the reagent only.
D
Electromeric effect dominates over inductive effect
288
[JEE Main 2024, 4 Apr Shift 1, Q17] Which of the following nitrogen containing compound does not give Lassaigne's test ?
Not attempted
A
Glycene
B
Phenyl hydrazine
C
Urea
D
Hydrazine
289
[JEE Main 2024, 4 Apr Shift 1, Q7] In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to :
Not attempted
A
decrease concentration of −OH{}^-\mathrm{OH} ions
B
increase concentration of Cl−{\mathrm{Cl}}^- ions
C
prevent interference by phosphate ions
D
increase concentration of NH4+{\mathrm{NH}}_4{}^+ ions
290
[JEE Main 2024, 4 Apr Shift 1, Q22] Only 2 mL2\ \mathrm{mL} of KMnO4{\mathrm{KMnO}}_4 solution of unknown molarity is required to reach the end point of a titration of 20 mL20\ \mathrm{mL} of oxalic acid (2M)(2M) in acidic medium. The molarity of KMnO4{\mathrm{KMnO}}_4 solution should be ________ M.
Not attempted
Your answer: —
Correct answer: 8
291
[JEE Main 2024, 4 Apr Shift 1, Q24] The enthalpy of formation of ethane (C2H6)(C_2H_6) from ethylene by addition of hydrogen where the bond-energies of C−H,C−C,C=C,H−HC-H,C-C,C=C,H-H are 414 kJ,347 kJ,615 kJ414\ \mathrm{kJ},347\ \mathrm{kJ},615\ \mathrm{kJ} and 435 kJ435\ \mathrm{kJ} respectively is −- __________ kJ\mathrm{kJ}
Not attempted
Your answer: —
Correct answer: 125
292
[JEE Main 2024, 4 Apr Shift 1, Q11] Number of molecules/ions from the following in which the central atom is involved in sp3{\mathrm{sp}}^3 hybridization is ________. NO3−,BCl3,ClO2−,ClO3−{\mathrm{NO}}_3^-,{\mathrm{BCl}}_3,{\mathrm{ClO}}_2^-,{\mathrm{ClO}}_3^-
Not attempted
A
2
B
4
C
1
D
3
293
[JEE Main 2024, 4 Apr Shift 1, Q18] Which one of the following molecules has maximum dipole moment?
Not attempted
A
CH4{\mathrm{CH}}_4
B
NF3{\mathrm{NF}}_3
C
NH3{\mathrm{NH}}_3
D
PF5{\mathrm{PF}}_5
294
[JEE Main 2024, 4 Apr Shift 1, Q29] Number of molecules/species from the following having one unpaired electron is ________. O2,O2−1,NO,CN−1,O22−O_2,O_2^{-1},\mathrm{NO},{\mathrm{CN}}^{-1},O_2^{2-}
Not attempted
Your answer: —
Correct answer: 2
295
[JEE Main 2024, 4 Apr Shift 1, Q16] The correct order of first ionization enthalpy values of the following elements is : (A) O (B) N (C) Be (D) F (E) B Choose the correct answer from the options given below :
Not attempted
A
A<B<D<C<EA<B<D<C<E
B
C<E<A<B<DC<E<A<B<D
C
E<C<A<B<DE<C<A<B<D
D
B<D<C<E<AB<D<C<E<A
296
[JEE Main 2024, 4 Apr Shift 1, Q20] Number of elements from the following that CANNOT form compounds with valencies which match with their respective group valencies is ________. B, C, N, S, O, F, P, Al, Si
Not attempted
A
7
B
3
C
5
D
6
297
[JEE Main 2024, 4 Apr Shift 1, Q27] The de-Broglie's wavelength of an electron in the 4th 4^{\text{th }} orbit is ________ πa0\pi a_0 . ( a0=a_0= Bohr's radius)
Not attempted
Your answer: —
Correct answer: 8
298
[JEE Main 2024, 4 Apr Shift 1, Q13] The Molarity (M) of an aqueous solution containing 5.85 g5.85\ g of NaCl\mathrm{NaCl} in 500 mL500\ \mathrm{mL} water is : (Given : Molar Mass Na:23\mathrm{Na}:23 and Cl:35.5 gmol−1\mathrm{Cl}:35.5{\ \mathrm{gmol}}^{-1} )
Not attempted
A
20
B
4
C
2
D
0.2
299
[JEE Main 2024, 1 Feb Shift 2, Q21] The number of tripeptides formed by three different amino acids using each amino acid once is ______.
Not attempted
Your answer: —
Correct answer: 6
300
[JEE Main 2024, 1 Feb Shift 2, Q29] Number of compounds which give reaction with Hinsberg's reagent is _________.
Not attempted
Your answer: —
Correct answer: 5
301
[JEE Main 2024, 1 Feb Shift 2, Q10] Acid D formed in above reaction is :
Not attempted
A
Malonic acid
B
Oxalic acid
C
Succinic acid
D
Gluconic acid
302
[JEE Main 2024, 1 Feb Shift 2, Q8] Match List - I with List - II . List I (Reactants)List II (Product)(A) Phenol, Zn/Δ(I) Salicylaldehyde(B) Phenol,CHCl3, NaOH, HCl(II) Salicylic acid(C) Phenol,CO2, NaOH, HCl(III) Benzene(D) Phenol, Conc.HNO3(IV) Picric acid\displaystyle\begin{array}{|l|l|}\hline \text{List I (Reactants)} & \text{List II (Product)} \\ \hline \text{(A) Phenol, Zn/Δ} & \text{(I) Salicylaldehyde} \\ \hline \text{(B) Phenol,} \mathrm{CHCl}_{3} \text{, NaOH, HCl} & \text{(II) Salicylic acid} \\ \hline \text{(C) Phenol,} \mathrm{CO}_{2} \text{, NaOH, HCl} & \text{(III) Benzene} \\ \hline \text{(D) Phenol, Conc.} \mathrm{HNO}_{3} & \text{(IV) Picric acid} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
B
(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
C
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
D
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
303
[JEE Main 2024, 1 Feb Shift 2, Q16] Which among the followng has highest boiling point?
Not attempted
A
CH3CH2CH2CH2−OH{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2-\mathrm{OH}
B
CH3CH2CH2CH3{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3
C
CH3CH2CH2CHO{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{CHO}
D
H5C2−O−C2H5H_5C_2-O-C_2H_5
304
[JEE Main 2024, 1 Feb Shift 2, Q7] Match List - I with List - II. List I (Compound)List II (Use)(A) Carbon tetrachloride(I) Paint remover(B) Methylene chloride(II) Refrigerators and air conditioners(C) DDT(III) Fire extinguisher(D) Freons(IV) Non Biodegradable insecticide\displaystyle\begin{array}{|l|l|}\hline \text{List I (Compound)} & \text{List II (Use)} \\ \hline \text{(A) Carbon tetrachloride} & \text{(I) Paint remover} \\ \hline \text{(B) Methylene chloride} & \text{(II) Refrigerators and air conditioners} \\ \hline \text{(C) DDT} & \text{(III) Fire extinguisher} \\ \hline \text{(D) Freons} & \text{(IV) Non Biodegradable insecticide} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
B
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
C
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
D
(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
305
[JEE Main 2024, 1 Feb Shift 2, Q5] [Co(NH3)6]3+{[\mathrm{Co}{({\mathrm{NH}}_3)}_6]}^{3+} and [CoF6]3−{[{\mathrm{CoF}}_6]}^{3-} are respectively known as :
Not attempted
A
Inner orbital Complex, Spin paired Complex
B
Spin paired Complex, Spin free Complex
C
Spin free Complex, Spin paired Complex
D
Outer orbital Complex, Inner orbital Complex
306
[JEE Main 2024, 1 Feb Shift 2, Q9] Given below are two statements : Statement (I) : Dimethyl glyoxime forms a six-membered covalent chelate when treated with NiCl2{\mathrm{NiCl}}_2 solution in presence of NH4OH{\mathrm{NH}}_4\mathrm{OH} . Statement (II) : Prussian blue precipitate contains iron both in (+2)(+2) and (+3)(+3) oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are true
C
Statement I is true but Statement II is false
D
Both Statement I and Statement II are false
307
[JEE Main 2024, 1 Feb Shift 2, Q6] The transition metal having highest 3rd 3^{\text{rd }} ionisation enthalpy is :
Not attempted
A
Mn\mathrm{Mn}
B
Fe\mathrm{Fe}
C
Cr\mathrm{Cr}
D
VV
308
[JEE Main 2024, 1 Feb Shift 2, Q13] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) . Assertion (A) : In aqueous solutions Cr2+{\mathrm{Cr}}^{2+} is reducing while Mn3+{\mathrm{Mn}}^{3+} is oxidising in nature. Reason (R) : Extra stability to half filled electronic configuration is observed than incompletely filled electronic configuration. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
(A) is true but (R) is false
B
Both (A) and (R) are true and (R) is the correct explanation of (A)
C
Both (A) and (R) are true but (R) is not the correct explanation of (A)
D
(A) is false but (R) is true
309
[JEE Main 2024, 1 Feb Shift 2, Q19] Which of the following compounds show colour due to d-d transition?
Not attempted
A
K2Cr2O7K_2{\mathrm{Cr}}_2O_7
B
CuSO4⋅5H2O{\mathrm{CuSO}}_4\cdot 5H_2O
C
KMnO4{\mathrm{KMnO}}_4
D
K2CrO4K_2{\mathrm{CrO}}_4
310
[JEE Main 2024, 1 Feb Shift 2, Q24] The following data were obtained during the first order thermal decomposition of a gas A at constant volume : A(g)→2 B( g)+C(g)A(g)\to 2\ B(\ g)+C(g) S.No.Time /sTotal pressure /(atm)1.00.12.1150.28\displaystyle\begin{array}{|l|l|l|}\hline \text{S.No.} & \text{Time /s} & \text{Total pressure /(atm)} \\ \hline \text{1.} & \text{0} & \text{0.1} \\ \hline \text{2.} & \text{115} & \text{0.28} \\ \hline \end{array} The rate constant of the reaction is ________ ×10−2 s−1\times {10}^{-2}{\ s}^{-1} (nearest integer)
Not attempted
Your answer: —
Correct answer: 2
311
[JEE Main 2024, 1 Feb Shift 2, Q26] The amount of electricity in Coulomb required for the oxidation of 1 mol1\ \mathrm{mol} of H2OH_2O to O2O_2 is __________ ×105C\times {10}^5C .
Not attempted
Your answer: —
Correct answer: 2
312
[JEE Main 2024, 1 Feb Shift 2, Q28] Consider the following redox reaction : MnO4−+H++H2C2O4⇌Mn2++H2O+CO2{\mathrm{MnO}}_4^-+H^++H_2C_2O_4\rightleftharpoons {\mathrm{Mn}}^{2+}+H_2O+{\mathrm{CO}}_2 The standard reduction potentials are given as below (Ered 0)(E_{\text{red }}^0) : EMnO4−/Mn2+∘=+1.51 VECO2/H2C2O4∘=−0.49 V\begin{array}{cc} & E_{{\mathrm{MnO}}_4^-/{\mathrm{Mn}}^{2+}}^{\circ}=+1.51\ V \\ \\ & E_{{\mathrm{CO}}_2/H_2C_2O_4}^{\circ}=-0.49\ V\end{array} If the equilibrium constant of the above reaction is given as Keq=10xK_{\mathrm{eq}}={10}^x , then the value of x=x= __________ (nearest integer)
Not attempted
Your answer: —
Correct answer: 338
313
[JEE Main 2024, 1 Feb Shift 2, Q22] Mass of ethylene glycol (antifreeze) to be added to 18.6 kg18.6\ \mathrm{kg} of water to protect the freezing point at −24∘C-{24}^{\circ}C is ________ kg\mathrm{kg} (Molar mass in g mol−1g\ {\mathrm{mol}}^{-1} for ethylene glycol 62, Kf62,{\ K}_f of water =1.86 K=1.86\ K kg mol−1\mathrm{kg}\ {\mathrm{mol}}^{-1} )
Not attempted
Your answer: —
Correct answer: 15
314
[JEE Main 2024, 1 Feb Shift 2, Q1] In the given reactions identify AA and BB
Not attempted
A
A : n-Pentane    B : Cis - 2 - butene
B
A : 2-Pentyne     B : Cis-2-butene
C
A : n-Pentane     B : trans-2-butene
D
A : 2-Pentyne      B : trans-2-butene
315
[JEE Main 2024, 1 Feb Shift 2, Q23] Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is _______ .
Not attempted
Your answer: —
Correct answer: 6
316
[JEE Main 2024, 1 Feb Shift 2, Q4] The set of meta directing functional groups from the following sets is :
Not attempted
A
−CN,−NH2,−NHR,−OCH3-\mathrm{CN},-{\mathrm{NH}}_2,-\mathrm{NHR},-{\mathrm{OCH}}_3
B
−CN,−CHO,−NHCOCH3,−COOR-\mathrm{CN},-\mathrm{CHO},-{\mathrm{NHCOCH}}_3,-\mathrm{COOR}
C
−NO2,−NH2,−COOH,−COOR-{\mathrm{NO}}_2,-{\mathrm{NH}}_2,-\mathrm{COOH},-\mathrm{COOR}
D
−NO2,−CHO,−SO3H,−COR-{\mathrm{NO}}_2,-\mathrm{CHO},-{\mathrm{SO}}_3H,-\mathrm{COR}
317
[JEE Main 2024, 1 Feb Shift 2, Q11] Lassaigne's test is used for detection of :
Not attempted
A
Phosphorous and halogens only
B
Nitrogen, Sulphur and Phosphorous only
C
Nitrogen, Sulphur, phosphorous and halogens
D
Nitrogen and Sulphur only
318
[JEE Main 2024, 1 Feb Shift 2, Q14] The functional group that shows negative resonance effect is :
Not attempted
A
−OH-\mathrm{OH}
B
−OR-\mathrm{OR}
C
−COOH-\mathrm{COOH}
D
−NH2-{\mathrm{NH}}_2
319
[JEE Main 2024, 1 Feb Shift 2, Q27] Following Kjeldahl's method, 1 g1\ g of organic compound released ammonia, that neutralised 10 mL10\ \mathrm{mL} of 2M H2SO42M\ H_2{\mathrm{SO}}_4 . The percentage of nitrogen in the compound is ___________ %\% .
Not attempted
Your answer: —
Correct answer: 56
320
[JEE Main 2024, 1 Feb Shift 2, Q3] Given below are two statements : Statement (I) : SiO2{\mathrm{SiO}}_2 and GeO2{\mathrm{GeO}}_2 are acidic while SnO\mathrm{SnO} and PbO\mathrm{PbO} are amphoteric in nature. Statement (II) : Allotropic forms of carbon are due to property of catenation and pπ−dπp\pi -d\pi bond formation. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are false
C
Both Statement I and Statement II are true
D
Statement I is true but Statement II is false
321
[JEE Main 2024, 1 Feb Shift 2, Q12] The strongest reducing agent among the following is :
Not attempted
A
SbH3{\mathrm{SbH}}_3
B
NH3{\mathrm{NH}}_3
C
BiH3{\mathrm{BiH}}_3
D
PH3{\mathrm{PH}}_3
322
[JEE Main 2024, 1 Feb Shift 2, Q2] Solubility of calcium phosphate (molecular mass, M) in water is WgW_g per 100 mL100\ \mathrm{mL} at 25∘C{25}^{\circ}C . Its solubility product at 25∘C{25}^{\circ}C will be approximately.
Not attempted
A
107(WM)3{10}^7{(\frac{W}{M})}^3
B
103(WM)5{10}^3{(\frac{W}{M})}^5
C
107(WM)5{10}^7{(\frac{W}{M})}^5
D
105(WM)5{10}^5{(\frac{W}{M})}^5
323
[JEE Main 2024, 1 Feb Shift 2, Q25] For a certain reaction at 300 K, K=10300\ K,\ K=10 , then ΔG∘\Delta G^{\circ} for the same reaction is - ____________ ×10−1 kJ mol−1\times {10}^{-1}\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} . (Given R=8.314JK−1 mol−1R=8.314{\mathrm{JK}}^{-1}{\ \mathrm{mol}}^{-1} )
Not attempted
Your answer: —
Correct answer: 57
324
[JEE Main 2024, 1 Feb Shift 2, Q17] Given below are two statements : Statement (I) : A π\pi bonding MO has lower electron density above and below the inter-nuclear axis. Statement (II) : The π∗{\pi}^* antibonding MO has a node between the nuclei. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
325
[JEE Main 2024, 1 Feb Shift 2, Q20] Select the compound from the following that will show intramolecular hydrogen bonding.
Not attempted
A
(A)
B
H2OH_2O
C
C2H5OHC_2H_5\mathrm{OH}
D
NH3{\mathrm{NH}}_3
326
[JEE Main 2024, 1 Feb Shift 2, Q18] Given below are two statements : Statement (I) : Both metals and non-metals exist in p and d-block elements. Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are false
B
Both Statement I and Statement II are true
C
Statement I is false but Statement II is true
D
Statement I is true but Statement II is false
327
[JEE Main 2024, 1 Feb Shift 2, Q15] The number of radial node/s for 3p3p orbital is :
Not attempted
A
3
B
2
C
1
D
4
328
[JEE Main 2024, 1 Feb Shift 2, Q30] 10 mL10\ \mathrm{mL} of gaseous hydrocarbon on combustion gives 40 mL40\ \mathrm{mL} of CO2( g){\mathrm{CO}}_2(\ g) and 50 mL50\ \mathrm{mL} of water vapour. Total number of carbon and hydrogen atoms in the hydrocarbon is _________ .
Not attempted
Your answer: —
Correct answer: 14
329
[JEE Main 2024, 1 Feb Shift 1, Q16] If one strand of a DNA has the sequence ATGCTTCA, sequence of the bases in complementary strand is :
Not attempted
A
CATTAGCT
B
TACGAAGT
C
ATGCGACT
D
GTACTTAC
330
[JEE Main 2024, 1 Feb Shift 1, Q12] Given below are two statements : Statement (I) : The NH2{\mathrm{NH}}_2 group in Aniline is ortho and para directing and a powerful activating group. Statement (II) : Aniline does not undergo Friedel-Craft's reaction (alkylation and acylation). In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
331
[JEE Main 2024, 1 Feb Shift 1, Q18] Given below are two statements : Statement (I) : Aminobenzene and aniline are same organic compounds. Statement (II) : Aminobenzene and aniline are different organic compounds. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are correct
B
Statement I is incorrect but Statement II is correct
C
Statement I is correct but Statement II is incorrect
D
Both Statement I and Statement II are incorrect
332
[JEE Main 2024, 1 Feb Shift 1, Q3] Identify AA and BB in the following sequence of reaction
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
333
[JEE Main 2024, 1 Feb Shift 1, Q19] Match List - I with List - II . List I (Reactions)List II (Reagents)(A) reaction (A) in figure(I)CH3MgBr,H2O(B)C6H5COC6H5⟶C6H5CH2C6H5(II) Zn(Hg) and conc. HCl(C)C6H5CHO⟶C6H5CH(OH)CH3(III)NaBH4,H+(D) reaction (D) in figure(IV) DIBAL-H,H2O\displaystyle\begin{array}{|l|l|}\hline \text{List I (Reactions)} & \text{List II (Reagents)} \\ \hline \text{(A) reaction (A) in figure} & \text{(I)} \mathrm{CH}_{3}\mathrm{MgBr} \text{,} \mathrm{H}_{2}\mathrm{O} \\ \hline \text{(B)} \mathrm{C}_{6}\mathrm{H}_{5}\mathrm{COC}_{6}\mathrm{H}_{5} \text{⟶} \mathrm{C}_{6}\mathrm{H}_{5}\mathrm{CH}_{2}\mathrm{C}_{6}\mathrm{H}_{5} & \text{(II) Zn(Hg) and conc. HCl} \\ \hline \text{(C)} \mathrm{C}_{6}\mathrm{H}_{5}\mathrm{CHO} \text{⟶} \mathrm{C}_{6}\mathrm{H}_{5}\mathrm{CH(OH)CH}_{3} & \text{(III)} \mathrm{NaBH}_{4} \text{,} \mathrm{H}^{+} \\ \hline \text{(D) reaction (D) in figure} & \text{(IV) DIBAL-H,} \mathrm{H}_{2}\mathrm{O} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
(A) (D)
A
(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
B
(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
C
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
D
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
334
[JEE Main 2024, 1 Feb Shift 1, Q9] Which of the following compound will most easily be attacked by an electrophile?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
335
[JEE Main 2024, 1 Feb Shift 1, Q15] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) . Assertion (A) : Haloalkanes react with KCN to form alkyl cyanides as a main product while with AgCN\mathrm{AgCN} form isocyanide as the main product. Reason (R) : KCN\mathrm{KCN} and AgCN\mathrm{AgCN} both are highly ionic compounds. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
(A) is correct but (R)(\mathbf{R}) is not correct
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
(A) is not correct but (R) is correct
D
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
336
[JEE Main 2024, 1 Feb Shift 1, Q4] Which of the following complex is homoleptic?
Not attempted
A
[Ni(NH3)2Cl2][\mathrm{Ni}{({\mathrm{NH}}_3)}_2{\mathrm{Cl}}_2]
B
[Co(NH3)4Cl2]+{[\mathrm{Co}{({\mathrm{NH}}_3)}_4{\mathrm{Cl}}_2]}^+
C
[Fe(NH3)4Cl2]+{[\mathrm{Fe}{({\mathrm{NH}}_3)}_4{\mathrm{Cl}}_2]}^+
D
[Ni(CN)4]2−{[\mathrm{Ni}(\mathrm{CN})_4]}^{2-}
337
[JEE Main 2024, 1 Feb Shift 1, Q10] Given below are two statements : Statement (I) : A solution of [Ni(H2O)6]2+{[\mathrm{Ni}{(H_2O)}_6]}^{2+} is green in colour. Statement (II) : A solution of [Ni(CN)4]2−{[\mathrm{Ni}(\mathrm{CN})_4]}^{2-} is colourless. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is incorrect but Statement II is correct
B
Both Statement I and Statement II are correct
C
Both Statement I and Statement II are incorrect
D
Statement I is correct but Statement II is incorrect
338
[JEE Main 2024, 1 Feb Shift 1, Q30] The ratio of 14C12C\frac{{}^{14}C}{{}^{12}C} in a piece of wood is 18\frac{1}{8} part that of atmosphere. If half life of 14C{}^{14}C is 5730 years, the age of wood sample is ________ years.
Not attempted
Your answer: —
Correct answer: 17190
339
[JEE Main 2024, 1 Feb Shift 1, Q23] The potential for the given half cell at 298 K298\ K is (-) __________ ×10−2 V\times {10}^{-2}\ V 2H(aq)++2e−⟶H2( g)[H+]=1M,PH2=2 atm\begin{array}{cc} & 2H_{(\mathrm{aq})}^++2e^-\longrightarrow H_2(\ g) \\ \\ & [H^+]=1M,P_{H_2}=2\ \mathrm{atm}\end{array} (Given : 2.303RT/F=0.06 V,log⁡2=0.32.303\mathrm{RT}/F=0.06\ V,\log 2=0.3 )
Not attempted
Your answer: —
Correct answer: 1
340
[JEE Main 2024, 1 Feb Shift 1, Q11] We have three aqueous solutions of NaCl\mathrm{NaCl} labelled as ' AA ', ' BB ' and ' CC ' with concentration 0.1M0.1M , 0.01M0.01M and 0.001M0.001M , respectively. The value of van 't Hoff factor(i) for these solutions will be in the order :
Not attempted
A
iA<iC<iBi_A<i_C<i_B
B
iA<iB<iCi_A<i_B<i_C
C
iA>iB>iCi_A>i_B>i_C
D
iA=iB=iCi_A=i_B=i_C
341
[JEE Main 2024, 1 Feb Shift 1, Q5] In Kjeldahl's method for estimation of nitrogen, CuSO4{\mathrm{CuSO}}_4 acts as :
Not attempted
A
catalytic agent
B
hydrolysis agent
C
reducing agent
D
oxidising agent
342
[JEE Main 2024, 1 Feb Shift 1, Q8] Ionic reactions with organic compounds proceed through : (A) homolytic bond cleavage (B) heterolytic bond cleavage (C) free radical formation (D) primary free radical (E) secondary free radical Choose the correct answer from the options given below :
Not attempted
A
(A) only
B
(B) only
C
(C) only
D
(D) and (E) only
343
[JEE Main 2024, 1 Feb Shift 1, Q22] Total number of deactivating groups in aromatic electrophilic substitution reaction among the following is _______ .
Not attempted
Your answer: —
Correct answer: 2
344
[JEE Main 2024, 1 Feb Shift 1, Q29] Number of optical isomers possible for 2-chlorobutane ________.
Not attempted
Your answer: —
Correct answer: 2
345
[JEE Main 2024, 1 Feb Shift 1, Q14] Given below are two statements: one is labelled as Assertion (A ) and the other is labelled as Reason (R) . Assertion (A) : PH3{\mathrm{PH}}_3 has lower boiling point than NH3{\mathrm{NH}}_3 . Reason (R) : In liquid state NH3{\mathrm{NH}}_3 molecules are associated through vander Waal's forces, but PH3{\mathrm{PH}}_3 molecules are associated through hydrogen bonding. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both (A) and (R) are correct and (R) is the correct explanation of (A)
B
(A) is not correct but (R) is correct
C
(A) is correct but (R) is not correct
D
Both (A)(\mathbf{A}) and (R)(\mathbf{R}) are correct but (R)(\mathbf{R}) is not the correct explanation of (A)(\mathbf{A})
346
[JEE Main 2024, 1 Feb Shift 1, Q21] The number of white coloured salts, among the following is (a) SrSO4{\mathrm{SrSO}}_4 (b) Mg(NH4)PO4\mathrm{Mg}({\mathrm{NH}}_4){\mathrm{PO}}_4 (c) BaCrO4{\mathrm{BaCrO}}_4 (d) Mn(OH)2\mathrm{Mn}(\mathrm{OH})_2 (e) PbSO4{\mathrm{PbSO}}_4 (f) PbCrO4{\mathrm{PbCrO}}_4 (g) AgBr\mathrm{AgBr} (h) PbI2{\mathrm{PbI}}_2 (i) CaC2O4{\mathrm{CaC}}_2O_4 (j) [Fe(OH)2(CH3COO)][\mathrm{Fe}(\mathrm{OH})_2({\mathrm{CH}}_3\mathrm{COO})]
Not attempted
Your answer: —
Correct answer: 5
347
[JEE Main 2024, 1 Feb Shift 1, Q24] Among the following oxides of p-block elements, number of oxides having amphoteric nature is ________. Cl2O7,CO,PbO2, N2O,NO,Al2O3,SiO2, N2O5,SnO2{\mathrm{Cl}}_2O_7,\mathrm{CO},{\mathrm{PbO}}_2,{\ N}_2O,\mathrm{NO},{\mathrm{Al}}_2O_3,{\mathrm{SiO}}_2,{\ N}_2O_5,{\mathrm{SnO}}_2
Not attempted
Your answer: —
Correct answer: 3
348
[JEE Main 2024, 1 Feb Shift 1, Q1] Which of the following reactions are disproportionation reactions? (A) Cu+→Cu2++Cu{\mathrm{Cu}}^+\to {\mathrm{Cu}}^{2+}+\mathrm{Cu} (B) 3MnO42−+4H+⟶2MnO4−+MnO2+2H2O3{\mathrm{MnO}}_4^{2-}+4H^+\longrightarrow 2{\mathrm{MnO}}_4^-+{\mathrm{MnO}}_2+2H_2O (C) 2KMnO4⟶K2MnO4+MnO2+O22{\mathrm{KMnO}}_4\longrightarrow K_2{\mathrm{MnO}}_4+{\mathrm{MnO}}_2+O_2 (D) 2MnO4−+3Mn2++2H2O⟶5MnO2+4H+2{\mathrm{MnO}}_4^-+3{\mathrm{Mn}}^{2+}+2H_2O\longrightarrow 5{\mathrm{MnO}}_2+4H^+ Choose the correct answer from the options given below :
Not attempted
A
(A), (B)
B
(A), (D)
C
(B), (C), (D)
D
(A), (B), (C)
349
[JEE Main 2024, 1 Feb Shift 1, Q17] In acidic medium, K2Cr2O7K_2{\mathrm{Cr}}_2O_7 shows oxidising action as represented in the half reaction: Cr2O72−+XH++Ye⊖→2 A+ZH2O{\mathrm{Cr}}_2O_7{}^{2-}+{\mathrm{XH}}^++{\mathrm{Ye}}^{\ominus}\to 2\ A+{\mathrm{ZH}}_2O X,Y,ZX,Y,Z and AA are respectively are :
Not attempted
A
14,7,614,7,6 and Cr3+{\mathrm{Cr}}^{3+}
B
14,6,714,6,7 and Cr3+{\mathrm{Cr}}^{3+}
C
8,4,68,4,6 and Cr2O3{\mathrm{Cr}}_2O_3
D
8,6,48,6,4 and Cr2O3{\mathrm{Cr}}_2O_3
350
[JEE Main 2024, 1 Feb Shift 1, Q6] Given below are two statements : Statement (I) : Potassium hydrogen phthalate is a primary standard for standardisation of sodium hydroxide solution. Statement (II) : In this titration phenolphthalein can be used as indicator. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are correct
B
Statement I is incorrect but Statement II is correct
C
Both Statement I and Statement II are incorrect
D
Statement I is correct but Statement II is incorrect
351
[JEE Main 2024, 1 Feb Shift 1, Q28] KaK_a for CH3COOH{\mathrm{CH}}_3\mathrm{COOH} is 1.8×10−51.8\times {10}^{-5} and KbK_b for NH4OH{\mathrm{NH}}_4\mathrm{OH} is 1.8×10−51.8\times {10}^{-5} . The pH\mathrm{pH} of ammonium acetate solution will be _________.
Not attempted
Your answer: —
Correct answer: 7
352
[JEE Main 2024, 1 Feb Shift 1, Q2] Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :
Not attempted
A
q=0,ΔT=0,w=0q=0,\Delta T=0,w=0
B
q=0,ΔT≠0,w=0q=0,\Delta T\ne 0,w=0
C
q≠0,ΔT=0,w=0q\ne 0,\Delta T=0,w=0
D
q=0,ΔT<0,w≠0q=0,\Delta T<0,w\ne 0
353
[JEE Main 2024, 1 Feb Shift 1, Q20] Arrange the bonds in order of increasing ionic character in the molecules. LiF\mathrm{LiF} , K2O,N2,SO2K_2O,N_2,{\mathrm{SO}}_2 and ClF3{\mathrm{ClF}}_3 :
Not attempted
A
N2<SO2<ClF3<K2O<LiFN_2<{\mathrm{SO}}_2<{\mathrm{ClF}}_3<K_2O<\mathrm{LiF}
B
ClF3<N2<SO2<K2O<LiF{\mathrm{ClF}}_3<N_2<{\mathrm{SO}}_2<K_2O<\mathrm{LiF}
C
LiF<K2O<ClF3<SO2<N2\mathrm{LiF}<K_2O<{\mathrm{ClF}}_3<{\mathrm{SO}}_2<N_2
D
N2<ClF3<SO2<K2O<LiFN_2<{\mathrm{ClF}}_3<{\mathrm{SO}}_2<K_2O<\mathrm{LiF}
354
[JEE Main 2024, 1 Feb Shift 1, Q26] The number of molecules/ion/s having trigonal bipyramidal shape is _______. PF5,BrF5,PCl5,[PtCl4]2−,BF3,Fe(CO)5{\mathrm{PF}}_5,{\mathrm{BrF}}_5,{\mathrm{PCl}}_5,{[\mathrm{Pt}{\mathrm{Cl}}_4]}^{2-},{\mathrm{BF}}_3,\mathrm{Fe}(\mathrm{CO})_5
Not attempted
Your answer: —
Correct answer: 3
355
[JEE Main 2024, 1 Feb Shift 1, Q7] In case of isoelectronic species the size of F−,NeF^-,\mathrm{Ne} and Na+{\mathrm{Na}}^+ is affected by :
Not attempted
A
Nuclear charge (z)(z)
B
None of the factors because their size is the same
C
Electron-electron interaction in the outer orbitals
D
Principal quantum number (n)
356
[JEE Main 2024, 1 Feb Shift 1, Q27] The lowest oxidation number of an atom in a compound A2BA_2B is -2 . The number of electrons in its valence shell is _______.
Not attempted
Your answer: —
Correct answer: 6
357
[JEE Main 2024, 1 Feb Shift 1, Q13] According to the wave-particle duality of matter by de-Broglie, which of the following graph plot presents most appropriate relationship between wavelength of electron (λ)(\lambda ) and momentum of electron (p)(p) ?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
358
[JEE Main 2024, 1 Feb Shift 1, Q25] Consider the following reaction : 3PbCl2+2(NH4)3PO4→Pb3(PO4)2+6NH4Cl3{\mathrm{PbCl}}_2+2{({\mathrm{NH}}_4)}_3{\mathrm{PO}}_4\to {\mathrm{Pb}}_3{({\mathrm{PO}}_4)}_2+6{\mathrm{NH}}_4\mathrm{Cl} If 72 mmol72\ \mathrm{mmol} of PbCl2{\mathrm{PbCl}}_2 is mixed with 50 mmol50\ \mathrm{mmol} of (NH4)3PO4{({\mathrm{NH}}_4)}_3{\mathrm{PO}}_4 , then the amount of Pb3(PO4)2{\mathrm{Pb}}_3{({\mathrm{PO}}_4)}_2 formed is ________ mmol (nearest integer).
Not attempted
Your answer: —
Correct answer: 24
359
[JEE Main 2024, 31 Jan Shift 2, Q21] From the vitamins A,B1, B6, B12,C,D,EA,B_1,{\ B}_6,{\ B}_{12},C,D,E and KK , the number of vitamins that can be stored in our body is _________.
Not attempted
Your answer: —
Correct answer: 5
360
[JEE Main 2024, 31 Jan Shift 2, Q5] The azo-dye (Y)(Y) formed in the following reactions is Sulphanilic acid +NaNO2+CH3COOH→X+{\mathrm{NaNO}}_2+{\mathrm{CH}}_3\mathrm{COOH}\to X .
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
361
[JEE Main 2024, 31 Jan Shift 2, Q19] Given below are two statements : Statement I : Aniline reacts with con. H2SO4H_2{\mathrm{SO}}_4 , followed by heating at 453−473 K453-473\ K gives pp -aminobenzene sulphonic acid, which gives blood red colour in the 'Lassaigne's test'. Statement II : In Friedel - Craft's alkylation and acylation reactions, aniline forms salt with the AlCl3{\mathrm{AlCl}}_3 catalyst. Due to this, nitrogen of aniline aquires a positive charge and acts as deactivating group. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Both statement I and statement II are true
B
Statement I is true but statement II is false
C
Statement I is false but statement II is true
D
Both statement I and statement II are false
362
[JEE Main 2024, 31 Jan Shift 2, Q26] A compound (x)(x) with molar mass 108 g mol−1108\ g{\ \mathrm{mol}}^{-1} undergoes acetylation to give product with molar mass 192 g mol−1192\ g{\ \mathrm{mol}}^{-1} . The number of amino groups in the compound (x)(x) is ___________.
Not attempted
Your answer: —
Correct answer: 2
363
[JEE Main 2024, 31 Jan Shift 2, Q3] Identify major product 'P' formed in the following reaction.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
364
[JEE Main 2024, 31 Jan Shift 2, Q14] Identify the name reaction.
Not attempted
A
Stephen Reaction
B
Etard Reaction
C
Gatterman - Koch Reaction
D
Rosenmund Reduction
365
[JEE Main 2024, 31 Jan Shift 2, Q17] Identify A and B in the following reaction sequence.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
366
[JEE Main 2024, 31 Jan Shift 2, Q11] Select the option with correct property -
Not attempted
A
[Ni(CO)4][\mathrm{Ni}(\mathrm{CO})_4] and [NiCl4]2−{[{\mathrm{NiCl}}_4]}^{2-} both Paramagnetic
B
[Ni(CO)4][\mathrm{Ni}(\mathrm{CO})_4] and [NiCl4]2−{[{\mathrm{NiCl}}_4]}^{2-} both Diamagnetic
C
[NiCl4]2−{[{\mathrm{NiCl}}_4]}^{2-} Diamagnetic, [Ni(CO)4][\mathrm{Ni}(\mathrm{CO})_4] Paramagnetic
D
[Ni(CO)4][\mathrm{Ni}(\mathrm{CO})_4] Diamagnetic, [NiCl4]2−{[{\mathrm{NiCl}}_4]}^{2-} Paramagnetic
367
[JEE Main 2024, 31 Jan Shift 2, Q18] Match List I with List II List - I (Complex ion)List - II (Electronic Configuration)(A)[Cr(H2O)6]3+(I)t2g2eg0(B)[Fe(H2O)6]3+(II)t2g3eg0(C)[Ni(H2O)6]2+(III)t2g3eg2(D)[V(H2O)6]3+(IV)t2g6eg2\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Complex ion)} & & \text{List - II (Electronic Configuration)} \\ \hline \text{(A)} & [\mathrm{Cr}(H_2O)_6]^{3+} & \text{(I)} & t_{2g}{}^2e_g^0 \\ \hline \text{(B)} & {[\mathrm{Fe}{(H_2O)}_6]}^{3+} & \text{(II)} & t_{2g}{}^3e_g{}^0 \\ \hline \text{(C)} & {[\mathrm{Ni}{(H_2O)}_6]}^{2+} & \text{(III)} & t_{2g}{}^3e_g{}^2 \\ \hline \text{(D)} & {[V{(H_2O)}_6]}^{3+} & \text{(IV)} & t_{2g}{}^6e_g^2 \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-IV, B-I, C-II, D-III
B
A-III, B-II, C-IV, D-I
C
A-II, B-III, C-IV, D-I
D
A-IV, B-III, C-I, D-II
368
[JEE Main 2024, 31 Jan Shift 2, Q10] Choose the correct statements from the following A. Mn2O7{\mathrm{Mn}}_2O_7 is an oil at room temperature B. V2O4V_2O_4 reacts with acid to give VO22+{\mathrm{VO}}_2{}^{2+} C. CrO\mathrm{CrO} is a basic oxide D. V2O5V_2O_5 does not react with acid Choose the correct answer from the options given below :
Not attempted
A
A, B and D only
B
A, B and C only
C
A and C only
D
B and C only
369
[JEE Main 2024, 31 Jan Shift 2, Q24] In the reaction of potassium dichromate, potassium chloride and sulfuric acid (conc.), the oxidation state of the chromium in the product is (+)(+) _________.
Not attempted
Your answer: —
Correct answer: 6
370
[JEE Main 2024, 31 Jan Shift 2, Q30] r=k[A]r=k[A] for a reaction, 50%50\% of AA is decomposed in 120 minutes. The time taken for 90%90\% decomposition of AA is _________ minutes.
Not attempted
Your answer: —
Correct answer: 399
371
[JEE Main 2024, 31 Jan Shift 2, Q25] The values of conductivity of some materials at 298.15 K−1 in Sm−1298.15{\ K}^{-1}\ \text{in}\ {\mathrm{Sm}}^{-1} are 2.1×1032.1\times {10}^3 , 1.0×10−16,1.2×10,3.91,1.5×10−2,1×10−7,1.0×1031.0\times {10}^{-16},1.2\times 10,3.91,1.5\times {10}^{-2},1\times {10}^{-7},1.0\times {10}^3 . The number of conductors among the materials is _____________.
Not attempted
Your answer: —
Correct answer: 4
372
[JEE Main 2024, 31 Jan Shift 2, Q1] Major product of the following reaction is -
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
373
[JEE Main 2024, 31 Jan Shift 2, Q9] The correct order of reactivity in electrophilic substitution reaction of the following compounds is :
Not attempted
A
B > C > A > D
B
B > A > C > D
C
D > C > B > A
D
A > B > C > D
374
[JEE Main 2024, 31 Jan Shift 2, Q23] Number of isomeric products formed by monochlorination of 2-methylbutane in presence of sunlight is ________.
Not attempted
Your answer: —
Correct answer: 6
375
[JEE Main 2024, 31 Jan Shift 2, Q7] Identify structure of 2,3-dibromo-1-phenylpentane.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
376
[JEE Main 2024, 31 Jan Shift 2, Q16] The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is -
Not attempted
A
distillation
B
steam distillation
C
distillation under reduced pressure
D
crystallisation
377
[JEE Main 2024, 31 Jan Shift 2, Q4] Given below are two statements: Statement I : Group 13 trivalent halides get easily hydrolyzed by water due to their covalent nature. Statement II : AlCl3{\mathrm{AlCl}}_3 upon hydrolysis in acidified aqueous solution forms octahedral [Al(H2O)6]3+{[\mathrm{Al}{(H_2O)}_6]}^{3+} ion. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is false but statement II is true
B
Both statement I and statement II are true
C
Both statement I and statement II are false
D
Statement I is true but statement II is false
378
[JEE Main 2024, 31 Jan Shift 2, Q8] Choose the correct statements from the following A. All group 16 elements form oxides of general formula EO2{\mathrm{EO}}_2 and EO3{\mathrm{EO}}_3 , where E=S,Se,TeE=S,\mathrm{Se},\mathrm{Te} and Po\mathrm{Po} . Both the types of oxides are acidic in nature. B. TeO2{\mathrm{TeO}}_2 is an oxidising agent while SO2{\mathrm{SO}}_2 is reducing in nature. C. The reducing property decreases from H2 SH_2\ S to H2H_2 Te down the group. D. The ozone molecule contains five lone pairs of electrons. Choose the correct answer from the options given below:
Not attempted
A
A and B only
B
C and D only
C
A and D only
D
B and C only
379
[JEE Main 2024, 31 Jan Shift 2, Q6] Given below are two statements: Statement I : S8S_8 solid undergoes disproportionation reaction under alkaline conditions to form S2−S^{2-} and S2O32−S_2O_3{}^{2-} . Statement II : ClO4−{\mathrm{ClO}}_4^- can undergo disproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is correct but statement II is incorrect
B
Both statement I and statement II are incorrect
C
Statement I is incorrect but statement II is correct
D
Both statement I and statement II are correct
380
[JEE Main 2024, 31 Jan Shift 2, Q27] Number of moles of H+H^+ ions required by 1 mole1\ \mathrm{mole} of MnO4−{\mathrm{MnO}}_4^- to oxidise oxalate ion to CO2{\mathrm{CO}}_2 is _________.
Not attempted
Your answer: —
Correct answer: 8
381
[JEE Main 2024, 31 Jan Shift 2, Q2] A(g)⇌B(g)+C2(g)A_{(g)}\rightleftharpoons B_{(g)}+\frac{C}{2}(g) The correct relationship between KP,αK_P,\alpha and equilibrium pressure PP is
Not attempted
A
KP=α1/2P3/2(2+α)3/2K_P=\frac{{\alpha}^{1/2}P^{3/2}}{(2+\alpha )^{3/2}}
B
KP=α3/2P1/2(2+α)1/2(1−α)K_P=\frac{{\alpha}^{3/2}P^{1/2}}{(2+\alpha )^{1/2}(1-\alpha )}
C
KP=α1/2P1/2(2+α)3/2K_P=\frac{{\alpha}^{1/2}P^{1/2}}{(2+\alpha )^{3/2}}
D
KP=α1/2P1/2(2+α)1/2K_P=\frac{{\alpha}^{1/2}P^{1/2}}{(2+\alpha )^{1/2}}
382
[JEE Main 2024, 31 Jan Shift 2, Q28] If 5 moles of an ideal gas expands from 10 L10\ L to a volume of 100 L100\ L at 300 K300\ K under isothermal and reversible condition then work, ww , is −x J-x\ J . The value of xx is __________. (Given R = 8.314 J K −1{}^{-1} mol −1{}^{-1} )
Not attempted
Your answer: —
Correct answer: 28721
383
[JEE Main 2024, 31 Jan Shift 2, Q12] Which of the following is least ionic?
Not attempted
A
CoCl 2{}_2
B
KCl
C
BaCl 2{}_2
D
AgCl
384
[JEE Main 2024, 31 Jan Shift 2, Q22] A diatomic molecule has a dipole moment of 1.2 D1.2\ \mathrm{D}. If the bond distance is 1 A˚1\ \text{Å}, then fractional charge on each atom is ________ ×10−1\times10^{-1} esu. (Given 1 D=10−181\ \mathrm{D}=10^{-18} esu cm)
Not attempted
Your answer: —
Correct answer: 0
385
[JEE Main 2024, 31 Jan Shift 2, Q15] Consider the following elements. Which of the following is/are true about A′,B′,C′A',B',C' and D′D' ? A. Order of atomic radii: B′<A′<D′<C′B'<A'<D'<C' B. Order of metallic character: B′<A′<D′<C′B'<A'<D'<C' C. Size of the element: D′<C′<B′<A′D'<C'<B'<A' D. Order of ionic radii: B′+<A1+<D′+<C+B^{'+}<A^{1^+}<D^{'+}<C^+ Choose the correct answer from the options given below :
Not attempted
A
A only
B
B, C and D only
C
A and B only
D
A, B and D only
386
[JEE Main 2024, 31 Jan Shift 2, Q13] The four quantum numbers for the electron in the outer most orbital of potassium (atomic no. 19) are
Not attempted
A
n=3,l=0, m=1, s=+12n=3,l=0,\ m=1,\ s=+\frac{1}{2}
B
n=4,l=0, m=0,s=+12n=4,l=0,\ m=0,s=+\frac{1}{2}
C
n=2,l=0, m=0,s=+12n=2,l=0,\ m=0,s=+\frac{1}{2}
D
n=4,l=2, m=−1,s=+12n=4,l=2,\ m=-1,s=+\frac{1}{2}
387
[JEE Main 2024, 31 Jan Shift 2, Q20] A sample of CaCO3{\mathrm{CaCO}}_3 and MgCO3{\mathrm{MgCO}}_3 weighed 2.21 g2.21\ g is ignited to constant weight of 1.152 g1.152\ g . The composition of mixture is : (Given molar mass in g mol−1CaCO3:100,MgCO3:84g{\ \mathrm{mol}}^{-1}{\mathrm{CaCO}}_3:100,{\mathrm{MgCO}}_3:84 )
Not attempted
A
1.187 g CaCO3+1.187 g MgCO31.187\ g{\ \mathrm{CaCO}}_3+1.187\ g{\ \mathrm{MgCO}}_3
B
1.187 g CaCO3+1.023 g MgCO31.187\ g{\ \mathrm{CaCO}}_3+1.023\ g{\ \mathrm{MgCO}}_3
C
1.023 g CaCO3+1.187 g MgCO31.023\ g{\ \mathrm{CaCO}}_3+1.187\ g{\ \mathrm{MgCO}}_3
D
1.023 g CaCO3+1.023 g MgCO31.023\ g{\ \mathrm{CaCO}}_3+1.023\ g{\ \mathrm{MgCO}}_3
388
[JEE Main 2024, 31 Jan Shift 2, Q29] The molarity of 1 L1\ L orthophosphoric acid (H3PO4)(H_3{\mathrm{PO}}_4) having 70%70\% purity by weight (specific gravity 1.54 g cm−31.54\ g{\ \mathrm{cm}}^{-3} ) is __________ MM . (Molar mass of H3PO4=98 g mol−1H_3{\mathrm{PO}}_4=98\ g{\ \mathrm{mol}}^{-1} )
Not attempted
Your answer: —
Correct answer: 11
389
[JEE Main 2024, 31 Jan Shift 1, Q1] Match List I with List II List - IList - II(A)Glucose/NaHCO3/Δ(I)Gluconic acid(B) Glucose /HNO3(II)No reaction(C) Glucose /HI/Δ(III)n-hexane(D)Glucose/Bromine water(IV)Saccharic acid\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\ \hline \text{(A)} & \text{Glucose/} {\mathrm{NaHCO}}_3/\Delta & \text{(I)} & \text{Gluconic acid} \\ \hline \text{(B)} & \text{ Glucose }/{\mathrm{HNO}}_3 & \text{(II)} & \text{No reaction} \\ \hline \text{(C)} & \text{ Glucose }/\mathrm{HI}/\Delta & \text{(III)} & \text{n-hexane} \\ \hline \text{(D)} & \text{Glucose/Bromine water} & \text{(IV)} & \text{Saccharic acid} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-II, B-IV, C-III, D-I
B
A-III, B-II, C-I, D-IV
C
A-IV, B-I, C-III, D-II
D
A-I, B-IV, C-III, D-II
390
[JEE Main 2024, 31 Jan Shift 1, Q22] The product of the following reaction is P. The number of hydroxyl groups present in the product P is ________.
Not attempted
Your answer: —
Correct answer: 0
391
[JEE Main 2024, 31 Jan Shift 1, Q8] Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Alcohols react both as nucleophiles and electrophiles. Reason R: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen. In the light of the above statements, choose the correct answer from the options given below:
Not attempted
A
AA is false but RR is true.
B
Both AA and RR are true but RR is NOT the correct explanation of AA .
C
Both AA and RR are true and RR is the correct explanation of AA .
D
AA is true but RR is false.
392
[JEE Main 2024, 31 Jan Shift 1, Q18] Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: pKa{\mathrm{pK}}_a value of phenol is 10.0 while that of ethanol is 15.9 . Reason R: Ethanol is stronger acid than phenol. In the light of the above statements, choose the correct answer from the options given below:
Not attempted
A
A is false but R is true.
B
Both AA and RR are true but RR is NOT the correct explanation of AA .
C
Both AA and RR are true and RR is the correct explanation of AA .
D
AA is true but RR is false.
393
[JEE Main 2024, 31 Jan Shift 1, Q9] The product (C) in the below mentioned reaction is : CH3−CH2−CH2−Br⟶ΔKOH(alc) A⟶HBrB⟶KOH(aq)ΔC{\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Br}{\longrightarrow}_{\Delta}^{{\mathrm{KOH}}_{(\text{alc) }}}A\overset{\mathrm{HBr}}{\longrightarrow }B{\longrightarrow}_{{\mathrm{KOH}}_{(\mathrm{aq})}}^{\Delta}C
Not attempted
A
Propan-1-ol
B
Propyne
C
Propan-2-ol
D
Propene
394
[JEE Main 2024, 31 Jan Shift 1, Q29] The total number of hydrogen atoms in product A and product B is _________.
Not attempted
Your answer: —
Correct answer: 10
395
[JEE Main 2024, 31 Jan Shift 1, Q7] The correct statements from following are: A. The strength of anionic ligands can be explained by crystal field theory. B. Valence bond theory does not give a quantitative interpretation of kinetic stability of coordination compounds. C. The hybridization involved in formation of [Ni(CN)4]2−{[\mathrm{Ni}(\mathrm{CN})_4]}^{2-} complex is dsp2{\mathrm{dsp}}^2 . D. The number of possible isomer(s) of cis- [PtCl2(en)2]2+{[{\mathrm{PtCl}}_2(\mathrm{en})_2]}^{2+} is one Choose the correct answer from the options given below:
Not attempted
A
B, C only
B
B, D only
C
A, C only
D
A, D only
396
[JEE Main 2024, 31 Jan Shift 1, Q25] The 'Spin only' Magnetic moment for [Ni(NH3)6]2+{[\mathrm{Ni}{({\mathrm{NH}}_3)}_6]}^{2+} is _________ ×10−1 BM\times {10}^{-1}\ \mathrm{BM} . (given == Atomic number of Ni:28\mathrm{Ni}:28 )
Not attempted
Your answer: —
Correct answer: 28
397
[JEE Main 2024, 31 Jan Shift 1, Q14] Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The green manganate ion is diamagnetic. D. Dark green coloured K2MnO4K_2{\mathrm{MnO}}_4 disproportionates in a neutral or acidic medium to give permanganate. E. With increasing oxidation number of transition metal, ionic character of the oxides decreases. Choose the correct answer from the options given below:
Not attempted
A
B, D, E only
B
A, B, C only
C
A, D, E only
D
B, C, D only
398
[JEE Main 2024, 31 Jan Shift 1, Q15] The metals that are employed in the battery industries are A. Fe\mathrm{Fe} B. Mn\mathrm{Mn} C. Ni\mathrm{Ni} D. Cr\mathrm{Cr} E. Cd\mathrm{Cd} Choose the correct answer from the options given below:
Not attempted
A
A, B, C, D and E
B
A, B, C and D only
C
B, D and E only
D
B, C and E only
399
[JEE Main 2024, 31 Jan Shift 1, Q11] Integrated rate law equation for a first order gas phase reaction is given by (where PiP_i is initial pressure and PtP_t is total pressure at time tt )
Not attempted
A
k=2.303t×log⁡Pi(2Pi−Pt)k=\frac{2.303}{t}\times \log \frac{P_i}{(2P_i-P_t)}
B
k=2.303t×log⁡(2Pi−Pt)Pik=\frac{2.303}{t}\times \log \frac{(2P_i-P_t)}{P_i}
C
k=2.303t×Pi(2Pi−Pt)k=\frac{2.303}{t}\times \frac{P_i}{(2P_i-P_t)}
D
k=2.303t×log⁡2Pi(2Pi−Pt)k=\frac{2.303}{t}\times \log \frac{2P_i}{(2P_i-P_t)}
400
[JEE Main 2024, 31 Jan Shift 1, Q10] Identify the factor from the following that does not affect electrolytic conductance of a solution.
Not attempted
A
The nature of solvent used.
B
The nature of the electrolyte added.
C
The nature of the electrode used.
D
Concentration of the electrolyte.
401
[JEE Main 2024, 31 Jan Shift 1, Q26] One Faraday of electricity liberates x×10−1x\times {10}^{-1} gram atom of copper from copper sulphate. xx is ________.
Not attempted
Your answer: —
Correct answer: 5
402
[JEE Main 2024, 31 Jan Shift 1, Q6] Identify the mixture that shows positive deviations from Raoult's Law
Not attempted
A
(CH3)2CO+CS2{({\mathrm{CH}}_3)}_2\mathrm{CO}+{\mathrm{CS}}_2
B
(CH3)2CO+C6H5NH2{({\mathrm{CH}}_3)}_2\mathrm{CO}+C_6H_5{\mathrm{NH}}_2
C
CHCl3+C6H6{\mathrm{CHCl}}_3+C_6H_6
D
CHCl3+(CH3)2CO{\mathrm{CHCl}}_3+{({\mathrm{CH}}_3)}_2\mathrm{CO}
403
[JEE Main 2024, 31 Jan Shift 1, Q24] Number of alkanes obtained on electrolysis of a mixture of CH3COONa{\mathrm{CH}}_3\mathrm{COONa} and C2H5COONaC_2H_5\mathrm{COONa} is ________.
Not attempted
Your answer: —
Correct answer: 3
404
[JEE Main 2024, 31 Jan Shift 1, Q5] A species having carbon with sextet of electrons and can act as electrophile is called
Not attempted
A
pentavalent carbon
B
carbon free radical
C
carbanion
D
carbocation
405
[JEE Main 2024, 31 Jan Shift 1, Q16] Match List I with List II List - I (Technique)List - II (Application(A)Distillation(I)Separation of glycerol from spent-lye(B)Fractional distillation(II)Aniline - Water mixture(C)Steam distillation(III)Separation of crude oil fractions(D)Distillation under reduced pressure(IV)Chloroform - Aniline\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Technique)} & & \text{List - II (Application} \\ \hline \text{(A)} & \text{Distillation} & \text{(I)} & \text{Separation of glycerol from spent-lye} \\ \hline \text{(B)} & \text{Fractional distillation} & \text{(II)} & \text{Aniline - Water mixture} \\ \hline \text{(C)} & \text{Steam distillation} & \text{(III)} & \text{Separation of crude oil fractions} \\ \hline \text{(D)} & \text{Distillation under reduced pressure} & \text{(IV)} & \text{Chloroform - Aniline} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-I, B-II, C-IV, D-III
B
A-II, B-III, C-I, D-IV
C
A-IV, B-I, C-II, D-III
D
A-IV, B-III, C-II, D-I
406
[JEE Main 2024, 31 Jan Shift 1, Q17] 'Adsorption' principle is used for which of the following purification method?
Not attempted
A
Chromatography
B
Sublimation
C
Distillation
D
Extraction
407
[JEE Main 2024, 31 Jan Shift 1, Q19] Given below are two statements: Statement I: IUPAC name of HO−CH2−(CH2)3−CH2−COCH3\mathrm{HO}-{\mathrm{CH}}_2-{({\mathrm{CH}}_2)}_3-{\mathrm{CH}}_2-{\mathrm{COCH}}_3 is 7-hydroxyheptan-2-one. Statement II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light of the above statements, choose the most appropriate answer from the options given below:
Not attempted
A
Statement I is incorrect but Statement II is correct.
B
Statement I is correct but Statement II is incorrect.
C
Both Statement I and Statement II are correct.
D
Both Statement I and Statement II are incorrect.
408
[JEE Main 2024, 31 Jan Shift 1, Q2] Consider the oxides of group 14 elements SiO2,GeO2,SnO2,PbO2,CO{\mathrm{SiO}}_2,{\mathrm{GeO}}_2,{\mathrm{SnO}}_2,{\mathrm{PbO}}_2,\mathrm{CO} and GeO\mathrm{GeO} . The amphoteric oxides are
Not attempted
A
SnO2,CO{\mathrm{SnO}}_2,\mathrm{CO}
B
SiO2,GeO2{\mathrm{SiO}}_2,{\mathrm{GeO}}_2
C
SnO2,PbO2{\mathrm{SnO}}_2,{\mathrm{PbO}}_2
D
GeO,GeO2\mathrm{GeO},{\mathrm{GeO}}_2
409
[JEE Main 2024, 31 Jan Shift 1, Q3] The compound that is white in color is
Not attempted
A
ammonium sulphide
B
ammonium arsinomolybdate
C
lead iodide
D
lead sulphate
410
[JEE Main 2024, 31 Jan Shift 1, Q4] Give below are two statements: Statement - I: Noble gases have very high boiling points. Statement - II: Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points. In the light of the above statements, choose the correct answer from the options given below:
Not attempted
A
Both Statement I and Statement II are false.
B
Statement I is true but Statement II is false.
C
Statement I is false but Statement II is true.
D
Both Statement I and Statement II are true.
411
[JEE Main 2024, 31 Jan Shift 1, Q28] Molar mass of the salt from NaBr,NaNO3,KI\mathrm{NaBr},{\mathrm{NaNO}}_3,\mathrm{KI} and CaF2{\mathrm{CaF}}_2 which does not evolve coloured vapours on heating with concentrated H2SO4H_2{\mathrm{SO}}_4 is ________ g mol−1g\ \mathrm{mol}{}^{-1} . (Molar mass in g mol−1:Na:23, N:14, K:39,O:16,Br:80,I:127, F:19,Ca:40)g{\ \mathrm{mol}}^{-1}:\mathrm{Na}:23,\ N:14,\ K:39,O:16,\mathrm{Br}:80,I:127,\ F:19,\mathrm{Ca}:40)
Not attempted
Your answer: —
Correct answer: 78
412
[JEE Main 2024, 31 Jan Shift 1, Q12] For the given reaction, choose the correct expression of KCK_C from the following :- Fe(aq)3++SCN(aq)−⇌(FeSCN)(aq)2+{\mathrm{Fe}}_{(\mathrm{aq})}^{3+}+{\mathrm{SCN}}_{(\mathrm{aq})}^-\rightleftharpoons (\mathrm{FeSCN})_{(\mathrm{aq})}^{2+}
Not attempted
A
KC=[Fe3+][SCN−][FeSCN2+]K_C=\frac{[{\mathrm{Fe}}^{3+}][{\mathrm{SCN}}^-]}{[{\mathrm{FeSCN}}^{2+}]}
B
KC=[FeSCN2+][Fe3+][SCN−]K_C=\frac{[{\mathrm{FeSCN}}^{2+}]}{[{\mathrm{Fe}}^{3+}][{\mathrm{SCN}}^-]}
C
KC=[FeSCN2+]2[Fe3+][SCN−]K_C=\frac{{[{\mathrm{FeSCN}}^{2+}]}^2}{[{\mathrm{Fe}}^{3+}][{\mathrm{SCN}}^-]}
D
KC=[FeSCN2+][Fe3+]2[SCN−]2K_C=\frac{[{\mathrm{FeSCN}}^{2+}]}{{[{\mathrm{Fe}}^{3+}]}^2{[{\mathrm{SCN}}^-]}^2}
413
[JEE Main 2024, 31 Jan Shift 1, Q21] Consider the following reaction at 298 K⋅32O2(g)⇌O3(g)⋅KP=2.47×10−29298\ K\cdot \frac{3}{2}O_{2(g)}\rightleftharpoons O_{3(g)}\cdot K_P=2.47\times {10}^{-29} . ΔrG⊖{\Delta}_rG^{\ominus} for the reaction is _________ kJ\mathrm{kJ} . (Given R=8.314 JK−1 mol−1R=8.314{\ \mathrm{JK}}^{-1}{\ \mathrm{mol}}^{-1} )
Not attempted
Your answer: —
Correct answer: 163
414
[JEE Main 2024, 31 Jan Shift 1, Q13] The linear combination of atomic orbitals to form molecular orbitals takes place only when the combining atomic orbitals A. have the same energy B. have the minimum overlap C. have same symmetry about the molecular axis D. have different symmetry about the molecular axis Choose the most appropriate from the options given below:
Not attempted
A
B, C, D only
B
A, B, C only
C
B and D only
D
A and C only
415
[JEE Main 2024, 31 Jan Shift 1, Q30] The number of species from the following in which the central atom uses sp3{\mathrm{sp}}^3 hybrid orbitals in its bonding is __________. NH3,SO2,SiO2,BeCl2,CO2,H2O,CH4,BF3{\mathrm{NH}}_3,{\mathrm{SO}}_2,{\mathrm{SiO}}_2,{\mathrm{BeCl}}_2,{\mathrm{CO}}_2,H_2O,{\mathrm{CH}}_4,{\mathrm{BF}}_3
Not attempted
Your answer: —
Correct answer: 3
416
[JEE Main 2024, 31 Jan Shift 1, Q20] The correct sequence of electron gain enthalpy of the elements listed below is A. Ar B. Br C. F D. S Choose the most appropriate from the options given below:
Not attempted
A
A>D>C>BA>D>C>B
B
A>D>B>CA>D>B>C
C
D>C>B>AD>C>B>A
D
C>B>D>AC>B>D>A
417
[JEE Main 2024, 31 Jan Shift 1, Q23] The ionization energy of sodium in  kJ mol−1\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} , if electromagnetic radiation of wavelength 242 nm242\ \mathrm{nm} is just sufficient to ionize sodium atom is _______.
Not attempted
Your answer: —
Correct answer: 494
418
[JEE Main 2024, 31 Jan Shift 1, Q27] Number of moles of methane required to produce 22 g CO2( g)22\ g{\ \mathrm{CO}}_{2(\ g)} after combustion is x×10−2x\times {10}^{-2} moles. The value of xx is _________.
Not attempted
Your answer: —
Correct answer: 50
419
[JEE Main 2024, 30 Jan Shift 2, Q21] The total number of correct statements, regarding the nucleic acids is _________. A. RNA is regarded as the reserve of genetic information B. DNA molecule self-duplicates during cell division C. DNA synthesizes proteins in the cell D. The message for the synthesis of particular proteins is present in DNA E. Identical DNA strands are transferred to daughter cells.
Not attempted
Your answer: —
Correct answer: 3
420
[JEE Main 2024, 30 Jan Shift 2, Q1] The products A and B formed in the following reaction scheme are respectively
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
421
[JEE Main 2024, 30 Jan Shift 2, Q15] m-chlorobenzaldehyde on treatment with 50% KOH solution yields :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
422
[JEE Main 2024, 30 Jan Shift 2, Q14] Salicylaldehyde is synthesized from phenol, when reacted with
Not attempted
A
HCCl3,NaOH{\mathrm{HCCl}}_3,\mathrm{NaOH}
B
CO2,NaOH{\mathrm{CO}}_2,\mathrm{NaOH}
C
(C)
D
CCl 4{}_4 , NaOH
423
[JEE Main 2024, 30 Jan Shift 2, Q16] Products A and B formed in the following set of reactions are
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
424
[JEE Main 2024, 30 Jan Shift 2, Q10] Given below are two statements: Statement - I: High concentration of strong nucleophilic reagent with secondary alkyl halides which do not have bulky substituents will follow SN2S_N{}^2 mechanism. Statement - II: A secondary alkyl halide when treated with a large excess of ethanol follows SN1S_N{}^1 mechanism. In the light of the above statements, choose the most appropriate from the options given below:
Not attempted
A
Both Statement I and Statement II are true.
B
Statement I is true but Statement II is false.
C
Both Statement I and Statement II are false.
D
Statement I is false but Statement II is true.
425
[JEE Main 2024, 30 Jan Shift 2, Q29] 2-chlorobutane +Cl2→C4H8Cl2+{\mathrm{Cl}}_2\to C_4H_8{\mathrm{Cl}}_2 (isomers) Total number of optically active isomers shown by C4H8Cl2C_4H_8{\mathrm{Cl}}_2 , obtained in the above reaction is _________.
Not attempted
Your answer: —
Correct answer: 6
426
[JEE Main 2024, 30 Jan Shift 2, Q18] The coordination geometry around the manganese in decacarbonyldimanganese (0)(0) is
Not attempted
A
Trigonal bipyramidal
B
Square pyramidal
C
Square planar
D
Octahedral
427
[JEE Main 2024, 30 Jan Shift 2, Q28] Number of complexes which show optical isomerism among the following is ________.  cis- [Cr(ox)2Cl2]3−,[Co(en)3]3+, cis- [Pt(en)2Cl2]2+, cis- [Co(en)2Cl2]+,trans- [Pt(en)2Cl2]2+, trans- [Cr(ox)2Cl2]3−\text{ cis- }{[\mathrm{Cr}(\mathrm{ox})_2{\mathrm{Cl}}_2]}^{3-},{[\mathrm{Co}(\text{en})_3]}^{3+},\text{ cis- }{[\mathrm{Pt}(\text{en})_2{\mathrm{Cl}}_2]}^{2+},\text{ cis- }{[\mathrm{Co}(\text{en})_2{\mathrm{Cl}}_2]}^+,\text{trans- }{[\mathrm{Pt}(\text{en})_2{\mathrm{Cl}}_2]}^{2+},\text{ trans- }{[\mathrm{Cr}(\mathrm{ox})_2{\mathrm{Cl}}_2]}^{3-}
Not attempted
Your answer: —
Correct answer: 4
428
[JEE Main 2024, 30 Jan Shift 2, Q7] A and B formed in the following reactions are: CrO2Cl2+4NaOH→A+2NaCl+2H2O,A+2HCl+2H2O2→B+3H2O\begin{array}{cc} & {\mathrm{CrO}}_2{\mathrm{Cl}}_2+4\mathrm{NaOH}\to A+2\mathrm{NaCl}+2H_2O, \\ & A+2\mathrm{HCl}+2H_2O_2\to B+3H_2O\end{array}
Not attempted
A
A=Na2Cr2O7, B=CrO5A={\mathrm{Na}}_2{\mathrm{Cr}}_2O_7,\ B={\mathrm{CrO}}_5
B
A=Na2CrO4, B=CrO5A={\mathrm{Na}}_2{\mathrm{CrO}}_4,\ B={\mathrm{CrO}}_5
C
A=Na2Cr2O4, B=CrO4A={\mathrm{Na}}_2{\mathrm{Cr}}_2O_4,\ B={\mathrm{CrO}}_4
D
A=Na2Cr2O7, B=CrO3A={\mathrm{Na}}_2{\mathrm{Cr}}_2O_7,\ B={\mathrm{CrO}}_3
429
[JEE Main 2024, 30 Jan Shift 2, Q13] Alkaline oxidative fusion of MnO2{\mathrm{MnO}}_2 gives "A" which on electrolytic oxidation in alkaline solution produces B. A and B respectively are
Not attempted
A
Mn2O3{\mathrm{Mn}}_2O_3 and MnO42−{\mathrm{MnO}}_4^{2-}
B
Mn2O7{\mathrm{Mn}}_2O_7 and MnO4−{\mathrm{MnO}}_4^-
C
MnO42−{\mathrm{MnO}}_4^{2-} and MnO4−{\mathrm{MnO}}_4^-
D
MnO42−{\mathrm{MnO}}_4^{2-} and Mn2O7{\mathrm{Mn}}_2O_7
430
[JEE Main 2024, 30 Jan Shift 2, Q17] The orange colour of K2Cr2O7K_2{\mathrm{Cr}}_2O_7 and purple colour of KMnO4{\mathrm{KMnO}}_4 is due to
Not attempted
A
Charge transfer transition in both.
B
d→dd\to d transitions in KMnO4{\mathrm{KMnO}}_4 and charge transfer transitions in K2Cr2O7K_2{\mathrm{Cr}}_2O_7 .
C
d→dd\to d transitions in both
D
d→dd\to d transitions in K2Cr2O7K_2{\mathrm{Cr}}_2O_7 and charge transfer transitions in KMnO4{\mathrm{KMnO}}_4 .
431
[JEE Main 2024, 30 Jan Shift 2, Q27] NO2{\mathrm{NO}}_2 required for a reaction is produced by decomposition of N2O5N_2O_5 in CCl4{\mathrm{CCl}}_4 as by equation 2 N2O5( g)→4NO2( g)+O2( g)2{\ N}_2O_{5(\ g)}\to 4{\mathrm{NO}}_{2(\ g)}+O_{2(\ g)} The initial concentration of N2O5N_2O_5 is 3 mol L−13\ \mathrm{mol}{\ L}^{-1} and it is 2.75 mol L−12.75\ \mathrm{mol}{\ L}^{-1} after 30 minutes. The rate of formation of NO2{\mathrm{NO}}_2 is x×10−3 mol L−1 min⁡−1x\times {10}^{-3}\ \mathrm{mol}{\ L}^{-1}{\ \min}^{-1} , value of xx is _________. (nearest integer)
Not attempted
Your answer: —
Correct answer: 17
432
[JEE Main 2024, 30 Jan Shift 2, Q19] Reduction potential of ions are given below: ClO4−IO4−BrO4−E∘=1.19 VE∘=1.65 VE∘=1.74 V\begin{array}{ccc}{\mathrm{ClO}}_4^- & {\mathrm{IO}}_4^- & {\mathrm{BrO}}_4^- \\ E^{\circ}=1.19\ V & E^{\circ}=1.65\ V & E^{\circ}=1.74\ V\end{array} The correct order of their oxidising power is :
Not attempted
A
IO4−>BrO4−>ClO4−{\mathrm{IO}}_4^->{\mathrm{BrO}}_4^->{\mathrm{ClO}}_4^-
B
BrO4−>ClO4−>IO4−{\mathrm{BrO}}_4^->{\mathrm{ClO}}_4^->{\mathrm{IO}}_4^-
C
ClO4−>IO4−>BrO4−{\mathrm{ClO}}_4^->{\mathrm{IO}}_4^->{\mathrm{BrO}}_4^-
D
BrO4−>IO4−>ClO4−{\mathrm{BrO}}_4^->{\mathrm{IO}}_4^->{\mathrm{ClO}}_4^-
433
[JEE Main 2024, 30 Jan Shift 2, Q5] The solution from the following with highest depression in freezing point/lowest freezing point is
Not attempted
A
180 g180\ g of acetic acid dissolved in benzene
B
180 g180\ g of acetic acid dissolved in water
C
180 g180\ g of benzoic acid dissolved in benzene
D
180 g180\ g of glucose dissolved in water
434
[JEE Main 2024, 30 Jan Shift 2, Q8] If a substance ' AA ' dissolves in solution of a mixture of ' BB ' and ' CC ' with their respective number of moles as nA,nBn_A,n_B and nC3n_{C_3} . Mole fraction of CC in the solution is
Not attempted
A
nCnA×nB×nC\frac{n_C}{n_A\times n_B\times n_C}
B
nBnA+nB\frac{n_B}{n_A+n_B}
C
nCnA+nB+nC\frac{n_C}{n_A+n_B+n_C}
D
nCnA−nB−nC\frac{n_C}{n_A-n_B-n_C}
435
[JEE Main 2024, 30 Jan Shift 2, Q25] Number of geometrical isomers possible for the given structure is/are _________.
Not attempted
Your answer: —
Correct answer: 4
436
[JEE Main 2024, 30 Jan Shift 2, Q2] The correct stability order of carbocations is
Not attempted
A
(CH3)3C+>CH3−C+H2>(CH3)2C+H>C+H3{({\mathrm{CH}}_3)}_3C^+>{\mathrm{CH}}_3-\overset{+}{C}H_2>{({\mathrm{CH}}_3)}_2\overset{+}{C}H>\overset{+}{C}H_3
B
(CH3)3C+>(CH3)2C+H>CH3−C+H2>C+H3{({\mathrm{CH}}_3)}_3\overset{+}{C}>{({\mathrm{CH}}_3)}_2\overset{+}{C}H>{\mathrm{CH}}_3-\overset{+}{C}H_2>\overset{+}{C}H_3
C
(C)
D
C+H3>(CH3)2C+H>CH3−C+H2>(CH3)3C+\overset{+}{C}H_3>{({\mathrm{CH}}_3)}_2\overset{+}{C}H>{\mathrm{CH}}_3-\overset{+}{C}H_2>{({\mathrm{CH}}_3)}_3\overset{+}{C}
437
[JEE Main 2024, 30 Jan Shift 2, Q3] Which among the following purification methods is based on the principle of "Solubility" in two different solvents?
Not attempted
A
Distillation
B
Sublimation
C
Column Chromatography
D
Differential Extraction
438
[JEE Main 2024, 30 Jan Shift 2, Q4] IUPAC name of following compound is :
Not attempted
A
2-Aminobutanenitrile
B
3-Aminopropanenitrile
C
2-Aminopentanenitrile
D
3-Aminobutanenitrile
439
[JEE Main 2024, 30 Jan Shift 2, Q11] Choose the correct statements about the hydrides of group 15 elements. A. The stability of the hydrides decreases in the order NH3>PH3>AsH3>SbH3>BiH3{\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3 . B. The reducing ability of the hydride increases in the order NH3<PH3<AsH3<SbH3<BiH3{\mathrm{NH}}_3<{\mathrm{PH}}_3<{\mathrm{AsH}}_3<{\mathrm{SbH}}_3<{\mathrm{BiH}}_3 . C. Among the hydrides, NH3{\mathrm{NH}}_3 is strong reducing agent while BiH3{\mathrm{BiH}}_3 is mild reducing agent. D. The basicity of the hydrides increases in the order NH3<PH3<AsH3<SbH3<BiH3{\mathrm{NH}}_3<{\mathrm{PH}}_3<{\mathrm{AsH}}_3<{\mathrm{SbH}}_3<{\mathrm{BiH}}_3 . Choose the most appropriate from the options given below :
Not attempted
A
C and D only
B
A and D only
C
A and B only
D
B and C only
440
[JEE Main 2024, 30 Jan Shift 2, Q12] Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: H2TeH_2\mathrm{Te} is more acidic than H2 SH_2\ S . Reason R: Bond dissociation enthalpy of H2TeH_2\mathrm{Te} is lower than H2 SH_2\ S . In the light of the above statements, choose the most appropriate from the options given below:
Not attempted
A
Both AA and RR are true and RR is the correct explanation of AA .
B
Both AA and RR are true but RR is NOT the correct explanation of AA .
C
AA is false but RR is true.
D
AA is true but RR is false.
441
[JEE Main 2024, 30 Jan Shift 2, Q22] Number of metal ions characterized by flame test among the following is ________. Sr2+,Ba2+,Ca2+,Cu2+,Zn2+,Co2+,Fe2+{\mathrm{Sr}}^{2+},{\mathrm{Ba}}^{2+},{\mathrm{Ca}}^{2+},{\mathrm{Cu}}^{2+},{\mathrm{Zn}}^{2+},{\mathrm{Co}}^{2+},{\mathrm{Fe}}^{2+}
Not attempted
Your answer: —
Correct answer: 4
442
[JEE Main 2024, 30 Jan Shift 2, Q24] Total number of species from the following which can undergo disproportionation reaction is ________. H2O2,ClO3−,P4,Cl2,Ag,Cu+1, F2,NO2,K+H_2O_2,{\mathrm{ClO}}_3^-,P_4,{\mathrm{Cl}}_2,\mathrm{Ag},{\mathrm{Cu}}^{+1},{\ F}_2,{\mathrm{NO}}_2,K^+
Not attempted
Your answer: —
Correct answer: 6
443
[JEE Main 2024, 30 Jan Shift 2, Q26] The pH\mathrm{pH} of an aqueous solution containing 1M1M benzoic acid (pKa=4.20)({\mathrm{pK}}_a=4.20) and 1M1M sodium benzoate is 4.5. The volume of benzoic acid solution in 300 mL300\ \mathrm{mL} of this buffer solution is _________ mL\mathrm{mL} . (given : log⁡2=0.3\log 2=0.3 )
Not attempted
Your answer: —
Correct answer: 100
444
[JEE Main 2024, 30 Jan Shift 2, Q30] Two reactions are given below: 2Fe(s)+32O2( g)→Fe2O3( s),ΔH∘=−822 kJ/molC(s)+12O2( g)→CO(g),ΔH∘=−110 kJ/mol\begin{array}{cc} & 2{\mathrm{Fe}}_{(s)}+\frac{3}{2}O_{2(\ g)}\to {\mathrm{Fe}}_2O_{3(\ s)},\Delta H^{\circ}=-822\ \mathrm{kJ}/\mathrm{mol} \\ & C_{(s)}+\frac{1}{2}O_{2(\ g)}\to {\mathrm{CO}}_{(g)},\Delta H^{\circ}=-110\ \mathrm{kJ}/\mathrm{mol}\end{array} Then enthalpy change for following reaction 3C(s)+Fe2O3( s)→2Fe(s)+3CO(g)3C_{(s)}+{\mathrm{Fe}}_2O_{3(\ s)}\to 2{\mathrm{Fe}}_{(s)}+3{\mathrm{CO}}_{(g)} is _______ kJ/mol\mathrm{kJ}/\mathrm{mol} .
Not attempted
Your answer: —
Correct answer: 492
445
[JEE Main 2024, 30 Jan Shift 2, Q6] Given below are two statements: Statement - I: Since Fluorine is more electronegative than nitrogen, the net dipole moment of NF3{\mathrm{NF}}_3 is greater than NH3{\mathrm{NH}}_3 . Statement - II: In NH3{\mathrm{NH}}_3 , the orbital dipole due to lone pair and the dipole moment of NH\mathrm{NH} bonds are in opposite direction, but in NF3{\mathrm{NF}}_3 the orbital dipole due to lone pair and dipole moments of N-F bonds are in same direction. In the light of the above statements, choose the most appropriate from the options given below:
Not attempted
A
Statement I is true but Statement II is false.
B
Both Statement I and Statement II are true.
C
Both Statement I and Statement II are false.
D
Statement I is false but Statement II is true.
446
[JEE Main 2024, 30 Jan Shift 2, Q9] The molecule / ion with square pyramidal shape is
Not attempted
A
PCl5{\mathrm{PCl}}_5
B
[Ni(CN)4]2−{[\mathrm{Ni}(\mathrm{CN})_4]}^{2-}
C
PF5{\mathrm{PF}}_5
D
BrF5{\mathrm{BrF}}_5
447
[JEE Main 2024, 30 Jan Shift 2, Q20] Given below are two statements: Statement - I: Along the period, the chemical reactivity of the elements gradually increases from group 1 to group 18 . Statement - II: The nature of oxides formed by group 1 elements is basic while that of group 17 elements is acidic. In the light of the above statements, choose the most appropriate from the options given below:
Not attempted
A
Statement I is False but Statement II is true
B
Both Statement I and Statement II are False
C
Statement I is True But Statement II is False
D
Both Statement I and Statement II are True
448
[JEE Main 2024, 30 Jan Shift 2, Q23] Number of spectral lines obtained in He+{\mathrm{He}}^+ spectra, when an electron makes transition from fifth excited state to first excited state will be
Not attempted
Your answer: —
Correct answer: 10
449
[JEE Main 2024, 30 Jan Shift 1, Q13] Sugar which does not give reddish brown precipitate with Fehling's reagent, is :
Not attempted
A
Glucose
B
Sucrose
C
Lactose
D
Maltose
450
[JEE Main 2024, 30 Jan Shift 1, Q4] The final product A, formed in the following multistep reaction sequence is :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
451
[JEE Main 2024, 30 Jan Shift 1, Q17] Following is a confirmatory test for aromatic primary amines. Identify reagent (A) and (B).
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
452
[JEE Main 2024, 30 Jan Shift 1, Q5] This reduction reaction is known as:
Not attempted
A
Wolff-Kishner reduction
B
Etard reduction
C
Stephen reduction
D
Rosenmund reduction
453
[JEE Main 2024, 30 Jan Shift 1, Q14] In the given reactions, identify the reagent A and reagent B.
Not attempted
A
A−CrO3 B−CrO3A-{\mathrm{CrO}}_3 \ B-{\mathrm{CrO}}_3
B
A−CrO3 B−CrO2Cl2A-{\mathrm{CrO}}_3 \ B-{\mathrm{CrO}}_2{\mathrm{Cl}}_2
C
A- CrO2Cl2 B−CrO3{\mathrm{CrO}}_2{\mathrm{Cl}}_2 \ B-{\mathrm{CrO}}_3
D
A−CrO2Cl2 B−CrO2Cl2A-{\mathrm{CrO}}_2{\mathrm{Cl}}_2 \ B-{\mathrm{CrO}}_2{\mathrm{Cl}}_2
454
[JEE Main 2024, 30 Jan Shift 1, Q24] The compound formed by the reaction of ethanal with semicarbazide contains _________ number of nitrogen atoms.
Not attempted
Your answer: —
Correct answer: 3
455
[JEE Main 2024, 30 Jan Shift 1, Q2] Example of vinylic halide is :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
456
[JEE Main 2024, 30 Jan Shift 1, Q18] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : CH2=CH−CH2−Cl{\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{Cl} is an example of allyl halide. Reason (R) : Allyl halides are the compounds in which the halogen atom is attached to sp2{\mathrm{sp}}^2 hybridised carbon atom. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
(A) is true but (R) is false
B
(A) is false but (R) is true
C
Both (A) and (R) are true but (R) is not the correct explanation of (A)
D
Both (A) and (R) are true and (R) is the correct explanation of (A)
457
[JEE Main 2024, 30 Jan Shift 1, Q16] Choose the correct statements from the following : (A) Ethane-1, 2-diamine is a chelating ligand. (B) Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite. (C) Cyanide ion is used as ligand for leaching of silver. (D) Phosphine act as a ligand in Wilkinson catalyst. (E) The stability constants of Ca2+{\mathrm{Ca}}^{2+} and Mg2+{\mathrm{Mg}}^{2+} are similar with EDTA complexes. Choose the correct answer from the options given below :
Not attempted
A
(B), (C), (E) only
B
(A), (D), (E) only
C
(C), (D), (E) only
D
(A), (B), (C) only
458
[JEE Main 2024, 30 Jan Shift 1, Q10] Match List I with List II. List I SpeciesList II Electronic distribution(A)Cr+2(I)3d8(B)Mn+(II)3d34s1(C)Ni+2(III)3d4(D)V+(IV)3d54s1\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List I Species} & & \text{List II Electronic distribution} \\ \hline \text{(A)} & {\mathrm{Cr}}^{+2} & \text{(I)} & 3d^8 \\ \hline \text{(B)} & {\mathrm{Mn}}^+ & \text{(II)} & 3d^34s^1 \\ \hline \text{(C)} & {\mathrm{Ni}}^{+2} & \text{(III)} & 3d^4 \\ \hline \text{(D)} & V^+ & \text{(IV)} & 3d^54s^1 \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
B
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
C
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
D
(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
459
[JEE Main 2024, 30 Jan Shift 1, Q15] Diamagnetic Lanthanoid ions are :
Not attempted
A
La3+& Ce4+{\mathrm{La}}^{3+}\&{\ \mathrm{Ce}}^{4+}
B
Nd3+& Ce4+{\mathrm{Nd}}^{3+}\&{\ \mathrm{Ce}}^{4+}
C
Lu3+& Eu3+{\mathrm{Lu}}^{3+}\&{\ \mathrm{Eu}}^{3+}
D
Nd3+& Eu3+{\mathrm{Nd}}^{3+}\&{\ \mathrm{Eu}}^{3+}
460
[JEE Main 2024, 30 Jan Shift 1, Q28] The rate of First order reaction is 0.04 mol L−1 s−10.04\ \mathrm{mol}{\ L}^{-1}{\ s}^{-1} at 10 minutes and 0.03 mol L−1 s−10.03\ \mathrm{mol}{\ L}^{-1}{\ s}^{-1} at 20 minutes after initiation. Half life of the reaction is _______ minutes. (Given log⁡2=0.3010,log⁡3=0.4771\log 2=0.3010,\log 3=0.4771 )
Not attempted
Your answer: —
Correct answer: 24
461
[JEE Main 2024, 30 Jan Shift 1, Q8] What happens to freezing point of benzene when small quantity of napthalene is added to benzene?
Not attempted
A
Increases
B
Decreases
C
Remains unchanged
D
First decreases and then increases
462
[JEE Main 2024, 30 Jan Shift 1, Q6] Compound A formed in the following reaction reacts with B gives the product C. Find out A and B.
Not attempted
A
A=CH3−C≡CˉNa+,B=CH3−CH2−CH2−BrA={\mathrm{CH}}_3-C\equiv \bar{C}{\mathrm{Na}}^+,B={\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Br}
B
A=CH3−CH=CH2, B=CH3−CH2−CH2−BrA={\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2,\ B={\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Br}
C
A=CH3−C≡CˉNa+,B=CH3−CH2−CH3A={\mathrm{CH}}_3-C\equiv \bar{C}{\mathrm{Na}}^+,B={\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_3
D
A=CH3−CH2−CH3, B=CH3−C≡CHA={\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_3,\ B={\mathrm{CH}}_3-C\equiv \mathrm{CH}
463
[JEE Main 2024, 30 Jan Shift 1, Q7] Which of the following molecule/species is most stable?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
464
[JEE Main 2024, 30 Jan Shift 1, Q11] The Lassiagne's extract is boiled with dil HNO3{\mathrm{HNO}}_3 before testing for halogens because,
Not attempted
A
Silver halides are soluble in HNO3{\mathrm{HNO}}_3 .
B
AgCN\mathrm{AgCN} is soluble in HNO3{\mathrm{HNO}}_3 .
C
Na2S{\mathrm{Na}}_2S and NaCN\mathrm{NaCN} are decomposed by HNO3{\mathrm{HNO}}_3 .
D
Ag2S{\mathrm{Ag}}_2S is soluble in HNO3{\mathrm{HNO}}_3 .
465
[JEE Main 2024, 30 Jan Shift 1, Q20] Structure of 4-Methylpent-2-enal is :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
466
[JEE Main 2024, 30 Jan Shift 1, Q29] On a thin layer chromatographic plate, an organic compound moved by 3.5 cm3.5\ \mathrm{cm} , while the solvent moved by 5 cm5\ \mathrm{cm} . The retardation factor of the organic compound is ________ ×10−1\times {10}^{-1} .
Not attempted
Your answer: —
Correct answer: 7
467
[JEE Main 2024, 30 Jan Shift 1, Q1] Aluminium chloride in acidified aqueous solution forms an ion having geometry
Not attempted
A
Square planar
B
Octahedral
C
Trigonal bipyramidal
D
Tetrahedral
468
[JEE Main 2024, 30 Jan Shift 1, Q3] Given below are two statements : Statement (I) : The gas liberated on warming a salt with dil H2SO4H_2{\mathrm{SO}}_4 , turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion. Statement (II) : In statement-I the colour of paper turns black because of formation of lead sulphite. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are false
B
Statement I is true but Statement II is false
C
Both Statement I and Statement II are true
D
Statement I is false but Statement II is true
469
[JEE Main 2024, 30 Jan Shift 1, Q19] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : There is a considerable increase in covalent radius from NN to PP . However from As to Bi only a small increase in covalent radius is observed. Reason (R) : Covalent and ionic radii in a particular oxidation state increases down the group. In the light of the above statements, choose the most appropriate answer from the options given below:
Not attempted
A
(A) is false but (R) is true
B
Both (A) and (R) are true and (R) is the correct explanation of (A)
C
Both (A) and (R) are true but (R) is not the correct explanation of (A)
D
(A) is true but (R) is false
470
[JEE Main 2024, 30 Jan Shift 1, Q26] 2MnO4−+bI−+cH2O→xI2+yMnO2+zOˉH2{\mathrm{MnO}}_4^-+{\mathrm{bI}}^-+{\mathrm{cH}}_2O\to xI_2+y{\mathrm{MnO}}_2+z\bar{O}H If the above equation is balanced with integer coefficients, the value of zz is ________.
Not attempted
Your answer: —
Correct answer: 8
471
[JEE Main 2024, 30 Jan Shift 1, Q25] The pH\mathrm{pH} at which Mg(OH)2[ Ksp=1×10−11]\mathrm{Mg}(\mathrm{OH})_2[{\ K}_{\mathrm{sp}}=1\times {10}^{-11}] begins to precipitate from a solution containing 0.10 M Mg2+0.10\ M{\ \mathrm{Mg}}^{2+} ions is __________.
Not attempted
Your answer: —
Correct answer: 9
472
[JEE Main 2024, 30 Jan Shift 1, Q27] An ideal gas undergoes a cyclic transformation starting from the point A and coming back to the same point by tracing the path A→B→C→AA\to B\to C\to A as shown in the diagram above. The total work done in the process is __________ J.
Not attempted
Your answer: —
Correct answer: 200
473
[JEE Main 2024, 30 Jan Shift 1, Q9] Match List I with List II. List I MoleculeList II Shape(A)BrF5(I)T-Shape(B)H2O(II)See saw(C)ClF3(III)Bent(D)SF4(IV)Square pyramidal\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List I Molecule} & & \text{List II Shape} \\ \hline \text{(A)} & {\mathrm{BrF}}_5 & \text{(I)} & \text{T-Shape} \\ \hline \text{(B)} & H_2O & \text{(II)} & \text{See saw} \\ \hline \text{(C)} & {\mathrm{ClF}}_3 & \text{(III)} & \text{Bent} \\ \hline \text{(D)} & {\mathrm{SF}}_4 & \text{(IV)} & \text{Square pyramidal} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
A
(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
B
(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
C
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
D
(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
474
[JEE Main 2024, 30 Jan Shift 1, Q21] The total number of molecular orbitals formed from 2s2s and 2p2p atomic orbitals of a diatomic molecule is __________.
Not attempted
Your answer: —
Correct answer: 8
475
[JEE Main 2024, 30 Jan Shift 1, Q30] If IUPAC name of an element is "Unununnium" then the element belongs to nth\mathrm{n}^{th} group of Periodic table. The value of n is ________.
Not attempted
Your answer: —
Correct answer: 11
476
[JEE Main 2024, 30 Jan Shift 1, Q12] Given below are two statements : Statement (I) : The orbitals having same energy are called as degenerate orbitals. Statement (II) : In hydrogen atom, 3p and 3d orbitals are not degenerate orbitals. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is true but Statement II is false
B
Statement I is false but Statement II is true
C
Both Statement I and Statement II are false
D
Both Statement I and Statement II are true
477
[JEE Main 2024, 30 Jan Shift 1, Q22] The mass of sodium acetate (CH3COONa)({\mathrm{CH}}_3\mathrm{COONa}) required to prepare 250 mL250\ \mathrm{mL} of 0.35 M0.35\ M aqueous solution is ________ g. (Molar mass of CH3COONa{\mathrm{CH}}_3\mathrm{COONa} is 82.02 g mol−182.02\ g{\ \mathrm{mol}}^{-1} )
Not attempted
Your answer: —
Correct answer: 7
478
[JEE Main 2024, 30 Jan Shift 1, Q23] 0.05 cm0.05\ \mathrm{cm} thick coating of silver is deposited on a plate of 0.05 m20.05{\ m}^2 area. The number of silver atoms deposited on plate are ________ ×1023\times {10}^{23} . (At mass Ag=108, d=7.9 g cm−3\mathrm{Ag}=108,\ d=7.9\ g{\ \mathrm{cm}}^{-3} )
Not attempted
Your answer: —
Correct answer: 11
479
[JEE Main 2024, 29 Jan Shift 2, Q2] Match List I with List II List - I (Bio Polymer)List - II (Monomer)(A)Starch(I)nucleotide(B)Cellulose(II)α-glucose(C)Nucleic acid(III)β-glucose(D)Protein(IV)α-amino acid\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Bio Polymer)} & & \text{List - II (Monomer)} \\ \hline \text{(A)} & \text{Starch} & \text{(I)} & \text{nucleotide} \\ \hline \text{(B)} & \text{Cellulose} & \text{(II)} & \alpha \text{-glucose} \\ \hline \text{(C)} & \text{Nucleic acid} & \text{(III)} & \beta \text{-glucose} \\ \hline \text{(D)} & \text{Protein} & \text{(IV)} & \alpha \text{-amino acid} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-IV, B-II, C-I, D-III
B
A-I, B-III, C-IV, D-II
C
A-II, B-I, C-III, D-IV
D
A-II, B-III, C-I, D-IV
480
[JEE Main 2024, 29 Jan Shift 2, Q19] The product A formed in the following reaction is
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
481
[JEE Main 2024, 29 Jan Shift 2, Q11] Identify the reagents used for the following conversion
Not attempted
A
A=LiAlH4, B=NaOH(aq),C=NH2−NH2/KOH, ethylene glycol A={\mathrm{LiAlH}}_4,\ B={\mathrm{NaOH}}_{(\mathrm{aq})},C={\mathrm{NH}}_2-{\mathrm{NH}}_2/\mathrm{KOH}\text{, ethylene glycol }
B
A=DIBAL−H,B=NaOH(aq),C=NH2−NH2/KOH, ethylene glycol A=\mathrm{DIBAL}-H,B={\mathrm{NaOH}}_{(\mathrm{aq})},C={\mathrm{NH}}_2-{\mathrm{NH}}_2/\mathrm{KOH}\text{, ethylene glycol }
C
A=LiAlH4, B=NaOH(alc),C=Zn/HClA={\mathrm{LiAlH}}_4,\ B={\mathrm{NaOH}}_{(\mathrm{alc})},C=\mathrm{Zn}/\mathrm{HCl}
D
A=DIBAL−H,B=NaOH(alc),C=Zn/HClA=\mathrm{DIBAL}-H,B={\mathrm{NaOH}}_{(\mathrm{alc})},C=\mathrm{Zn}/\mathrm{HCl}
482
[JEE Main 2024, 29 Jan Shift 2, Q17] Phenol treated with chloroform in presence of sodium hydroxide, which further hydrolyzed in presence of an acid results
Not attempted
A
Salicylic acid
B
Benzene-1,2-diol
C
2-Hydroxybenzaldehyde
D
Benzene-1,3-diol
483
[JEE Main 2024, 29 Jan Shift 2, Q18] Match List I with List II List - I (Compound)List - II (pKavalue)(A)Ethanol(I)10.0(B)Phenol(II)15.9(C)m-Nitrophenol(III)7.1(D)p-Nitrophenol(IV)8.3\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Compound)} & & \text{List - II (} {\mathrm{pK}}_a \text{value)} \\ \hline \text{(A)} & \text{Ethanol} & \text{(I)} & \text{10.0} \\ \hline \text{(B)} & \text{Phenol} & \text{(II)} & \text{15.9} \\ \hline \text{(C)} & \text{m-Nitrophenol} & \text{(III)} & \text{7.1} \\ \hline \text{(D)} & \text{p-Nitrophenol} & \text{(IV)} & \text{8.3} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-I, B-II, C-III, D-IV
B
A-IV, B-I, C-II, D-III
C
A-II, B-I, C-IV, D-III
D
A-III, B-IV, C-I, D-II
484
[JEE Main 2024, 29 Jan Shift 2, Q20] Alkyl halide is converted into alkyl isocyanide by reaction with
Not attempted
A
KCN\mathrm{KCN}
B
NH4CN{\mathrm{NH}}_4\mathrm{CN}
C
NaCN\mathrm{NaCN}
D
AgCN\mathrm{AgCN}
485
[JEE Main 2024, 29 Jan Shift 2, Q10] The correct IUPAC name of K2MnO4K_2{\mathrm{MnO}}_4 is
Not attempted
A
Potassium tetraoxidomanganate (VI)
B
Dipotassium tetraoxidomanganate (VII)
C
Potassium tetraoxopermanganate (VI)
D
Potassium tetraoxidomanganese (VI)
486
[JEE Main 2024, 29 Jan Shift 2, Q16] A reagent which gives brilliant red precipitate with Nickel ions in basic medium is
Not attempted
A
dimethyl glyoxime
B
sodium nitroprusside
C
meta-dinitrobenzene
D
neutral FeCl3{\mathrm{FeCl}}_3
487
[JEE Main 2024, 29 Jan Shift 2, Q29] The oxidation number of iron in the compound formed during brown ring test for NO 3−{}_3^- iron is ________.
Not attempted
Your answer: —
Correct answer: 1
488
[JEE Main 2024, 29 Jan Shift 2, Q3] Which of the following acts as a strong reducing agent? (Atomic number: Ce=58,Eu=63,Gd=64,Lu=71\mathrm{Ce}=58,\mathrm{Eu}=63,\mathrm{Gd}=64,\mathrm{Lu}=71 )
Not attempted
A
Eu2+{\mathrm{Eu}}^{2+}
B
Gd3+{\mathrm{Gd}}^{3+}
C
Lu3+{\mathrm{Lu}}^{3+}
D
Ce4+{\mathrm{Ce}}^{4+}
489
[JEE Main 2024, 29 Jan Shift 2, Q8] Which of the following statements are correct about Zn,Cd\mathrm{Zn},\mathrm{Cd} and Hg\mathrm{Hg} ? A. They exhibit high enthalpy of atomization as the d-subshell is full. B. Zn\mathrm{Zn} and Cd\mathrm{Cd} do not show variable oxidation state while Hg\mathrm{Hg} shows +I+I and +II+\mathrm{II} . C. Compounds of Zn,Cd\mathrm{Zn},\mathrm{Cd} and Hg\mathrm{Hg} are paramagnetic in nature. D. Zn,Cd\mathrm{Zn},\mathrm{Cd} and Hg\mathrm{Hg} are called soft metals. Choose the most appropriate from the options given below:
Not attempted
A
C, D only
B
B, C only
C
A, D only
D
B, D only
490
[JEE Main 2024, 29 Jan Shift 2, Q27] The half-life of radioisotope bromine - 82 is 36 hours. The fraction which remains after one day is ________ ×10−2\times {10}^{-2} . (Given antilog 0.2006=1.5870.2006=1.587 )
Not attempted
Your answer: —
Correct answer: 63
491
[JEE Main 2024, 29 Jan Shift 2, Q25] A constant current was passed through a solution of AuCl4−{\mathrm{AuCl}}_4^- ion between gold electrodes. After a period of 10.0 minutes, the increase in mass of cathode was 1.314 g1.314\ g . The total charge passed through the solution is _______ ×10−2 F\times {10}^{-2}\ F . (Given atomic mass of Au=197\mathrm{Au}=197 )
Not attempted
Your answer: —
Correct answer: 2
492
[JEE Main 2024, 29 Jan Shift 2, Q30] Molality of 0.8 M H 2{}_2 SO 4{}_4 solution (density 1.06 g cm −3{}^{-3} ) is ________ ×10−3\times {10}^{-3} m.
Not attempted
Your answer: —
Correct answer: 815
493
[JEE Main 2024, 29 Jan Shift 2, Q9] The ascending acidity order of the following H atoms is
Not attempted
A
A < B < D < C
B
A < B < C < D
C
D < C < B < A
D
C < D < B < A
494
[JEE Main 2024, 29 Jan Shift 2, Q13] Which of the following reaction is correct?
Not attempted
A
C2H5CONH2+Br2+NaOH→C2H5CH2NH2+Na2CO3+NaBr+H2OC_2H_5{\mathrm{CONH}}_2+{\mathrm{Br}}_2+\mathrm{NaOH}\to C_2H_5{\mathrm{CH}}_2{\mathrm{NH}}_2+{\mathrm{Na}}_2{\mathrm{CO}}_3+\mathrm{NaBr}+H_2O
B
(B)
C
(C)
D
CH3CH2CH2NH2⟶H2OHNO2,0∘CCH3CH2OH+N2+HCl{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{NH}}_2{\longrightarrow}_{H_2O}^{{\mathrm{HNO}}_2,0^{\circ}C}{\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}+N_2+\mathrm{HCl}
495
[JEE Main 2024, 29 Jan Shift 2, Q15] Which one of the following will show geometrical isomerism?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
496
[JEE Main 2024, 29 Jan Shift 2, Q5] According to IUPAC system, the compound is named as
Not attempted
A
Cyclohex-2-en-1-ol
B
1-Hydroxyhex-2-ene
C
Cyclohex-1-en-3-ol
D
Cyclohex-1-en-2-ol
497
[JEE Main 2024, 29 Jan Shift 2, Q12] Chromatographic technique/s based on the principle of differential adsorption is / are A. Column chromatography B. Thin layer chromatography C. Paper chromatography Choose the most appropriate answer from the options given below:
Not attempted
A
B only
B
A only
C
A & B only
D
C only
498
[JEE Main 2024, 29 Jan Shift 2, Q28] The total number of 'Sigma' and 'Pi' bonds in 2-formylhex-4-enoic acid is _________.
Not attempted
Your answer: —
Correct answer: 22
499
[JEE Main 2024, 29 Jan Shift 2, Q1] On passing a gas, ' XX ', through Nessler's regent, a brown precipitate is obtained. The gas ' XX ' is
Not attempted
A
Cl2{\mathrm{Cl}}_2
B
CO2{\mathrm{CO}}_2
C
NH3{\mathrm{NH}}_3
D
H2SH_2S
500
[JEE Main 2024, 29 Jan Shift 2, Q14] Anomalous behavior of oxygen is due to its
Not attempted
A
large size and low electronegativity
B
small size and high electronegativity
C
small size and low electronegativity
D
large size and high electronegativity
501
[JEE Main 2024, 29 Jan Shift 2, Q24] The following concentrations were observed at 500 K500\ K for the formation of NH3{\mathrm{NH}}_3 from N2N_2 and H2H_2 . At equilibrium ; [N2]=2×10−2M,[H2]=3×10−2M[N_2]=2\times {10}^{-2}M,[H_2]=3\times {10}^{-2}M and [NH3]=1.5×10−2M[{\mathrm{NH}}_3]=1.5\times {10}^{-2}M . Equilibrium constant for the reaction is ________.
Not attempted
Your answer: —
Correct answer: 417
502
[JEE Main 2024, 29 Jan Shift 2, Q22] Standard enthalpy of vapourisation for CCl4{\mathrm{CCl}}_4 is 30.5 kJ mol−130.5\ \mathrm{kJ}{\ \mathrm{mol}}^{-1} . Heat required for vapourisation of 284 g284\ g of CCl4{\mathrm{CCl}}_4 at constant temperature is ________ kJ\mathrm{kJ} . (Given molar mass in gmol−1;C=12,Cl=35.5g{\mathrm{mol}}^{-1};C=12,\mathrm{Cl}=35.5 )
Not attempted
Your answer: —
Correct answer: 56
503
[JEE Main 2024, 29 Jan Shift 2, Q21] The total number of molecules with zero dipole moment among CH4,BF3,H2O,HF,NH3,CO2{\mathrm{CH}}_4,{\mathrm{BF}}_3,H_2O,\mathrm{HF},{\mathrm{NH}}_3,{\mathrm{CO}}_2 and SO2{\mathrm{SO}}_2 is ________.
Not attempted
Your answer: —
Correct answer: 3
504
[JEE Main 2024, 29 Jan Shift 2, Q26] The total number of anti bonding molecular orbitals, formed from 2s2s and 2p2p atomic orbitals in a diatomic molecule is _______.
Not attempted
Your answer: —
Correct answer: 4
505
[JEE Main 2024, 29 Jan Shift 2, Q4] Given below are two statements: Statement I : Fluorine has most negative electron gain enthalpy in its group. Statement II : Oxygen has least negative electron gain enthalpy in its group. In the light of the above statements, choose the most appropriate from the options given below
Not attempted
A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is false but Statement II is true
D
Statement I is true but Statement II is false
506
[JEE Main 2024, 29 Jan Shift 2, Q7] The element having the highest first ionization enthalpy is
Not attempted
A
CC
B
Al\mathrm{Al}
C
Si\mathrm{Si}
D
NN
507
[JEE Main 2024, 29 Jan Shift 2, Q6] Match List I with List II List - I (Spectral Series for Hydrogen)List - II (Spectral Region/Higher Energy State)(A)Lyman(I)Infrared region(B)Balmer(II)UV region(C)Paschen(III)Infrared region(D)Pfund(IV)Visible region\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Spectral Series for Hydrogen)} & & \text{List - II (Spectral Region/Higher Energy State)} \\ \hline \text{(A)} & \text{Lyman} & \text{(I)} & \text{Infrared region} \\ \hline \text{(B)} & \text{Balmer} & \text{(II)} & \text{UV region} \\ \hline \text{(C)} & \text{Paschen} & \text{(III)} & \text{Infrared region} \\ \hline \text{(D)} & \text{Pfund} & \text{(IV)} & \text{Visible region} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-II, B-IV, C-III, D-I
B
A-I, B-III, C-II, D-IV
C
A-II, B-III, C-I, D-IV
D
A-I, B-II, C-III, D-IV
508
[JEE Main 2024, 29 Jan Shift 2, Q23] If 50 mL50\ \mathrm{mL} of 0.5M0.5M oxalic acid is required to neutralise 25 mL25\ \mathrm{mL} of NaOH\mathrm{NaOH} solution, the amount of NaOH\mathrm{NaOH} in 50 mL50\ \mathrm{mL} of given NaOH\mathrm{NaOH} solution is ______ g.
Not attempted
Your answer: —
Correct answer: 4
509
[JEE Main 2024, 29 Jan Shift 1, Q9] Type of amino acids obtained by hydrolysis of proteins is :
Not attempted
A
γ\gamma
B
β\beta
C
α\alpha
D
δ\delta
510
[JEE Main 2024, 29 Jan Shift 1, Q5] the arenium ion which is not involved in the bromination of Aniline is __________.
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
511
[JEE Main 2024, 29 Jan Shift 1, Q13] The final product A formed in the following multistep reaction sequence is
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
512
[JEE Main 2024, 29 Jan Shift 1, Q27] From the compounds given below, number of compounds which give positive Fehling's test is _________. Benzaldehyde, Acetaldehyde, Acetone, Acetophenone, Methanal, 4nitrobenzaldehyde, cyclohexane carbaldehyde.
Not attempted
Your answer: —
Correct answer: 3
513
[JEE Main 2024, 29 Jan Shift 1, Q3] The major product(P) in the following reaction is
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
514
[JEE Main 2024, 29 Jan Shift 1, Q19] Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Aryl halides cannot be prepared by replacement of hydroxyl group of phenol by halogen atom. Reason R : Phenols react with halogen acids violently. In the light of the above statements, choose the most appropriate from the options given below :
Not attempted
A
A is true but R is false
B
Both A and R are true but R is NOT the correct explanation of A
C
A is false but R is true
D
Both A and R are true and R is the correct explanation of A
515
[JEE Main 2024, 29 Jan Shift 1, Q12] Match List I with List II List - I (Substances)List - II (Element Present)(A)Ziegler catalyst(I)Rhodium(B)Blood Pigment(II)Cobalt(C)Wilkinson catalyst(III)Iron(D)VitaminB12(IV)Titanium\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Substances)} & & \text{List - II (Element Present)} \\ \hline \text{(A)} & \text{Ziegler catalyst} & \text{(I)} & \text{Rhodium} \\ \hline \text{(B)} & \text{Blood Pigment} & \text{(II)} & \text{Cobalt} \\ \hline \text{(C)} & \text{Wilkinson catalyst} & \text{(III)} & \text{Iron} \\ \hline \text{(D)} & \text{Vitamin} B_{12} & \text{(IV)} & \text{Titanium} \\ \hline \end{array} Choose the correct answer from the options given below:
Not attempted
A
A-IV, B-III, C-I, D-II
B
A-II, B-IV, C-I, D-III
C
A-III, B-II, C-IV, D-I
D
A-II, B-III, C-IV, D-I
516
[JEE Main 2024, 29 Jan Shift 1, Q16] In which one of the following metal carbonyls, CO\mathrm{CO} forms a bridge between metal atoms?
Not attempted
A
[Os3(CO)12][{\mathrm{Os}}_3(\mathrm{CO})_{12}]
B
[Ru3(CO)12][{\mathrm{Ru}}_3(\mathrm{CO})_{12}]
C
[Mn2(CO)10][{\mathrm{Mn}}_2(\mathrm{CO})_{10}]
D
[Co2(CO)8][{\mathrm{Co}}_2(\mathrm{CO})_8]
517
[JEE Main 2024, 29 Jan Shift 1, Q8] In chromyl chloride test for confirmation of Cl−{\mathrm{Cl}}^- ion, a yellow solution is obtained. Acidification of the solution and addition of amyl alcohol and 10% H2O210\%{\ H}_2O_2 turns organic layer blue indicating formation of chromium pentoxide. The oxidation state of chromium in that is
Not attempted
A
+6
B
+5
C
+3
D
+10
518
[JEE Main 2024, 29 Jan Shift 1, Q17] KMnO4{\mathrm{KMnO}}_4 decomposes on heating at 513 K513\ K to form O2O_2 along with
Not attempted
A
K2MnO4 & MnK_2{\mathrm{MnO}}_4\ \&\ \mathrm{Mn}
B
MnO2 & K2O2{\mathrm{MnO}}_2\ \&{\ K}_2O_2
C
K2MnO4 & MnO2K_2{\mathrm{MnO}}_4\ \&{\ \mathrm{MnO}}_2
D
Mn & KO2\mathrm{Mn}\ \&{\ \mathrm{KO}}_2
519
[JEE Main 2024, 29 Jan Shift 1, Q20] In alkaline medium, MnO4−{\mathrm{MnO}}_4^- oxidises I−I^- to
Not attempted
A
I2I_2
B
IO3−{\mathrm{IO}}_3^-
C
IO−{\mathrm{IO}}^-
D
IO4−{\mathrm{IO}}_4^-
520
[JEE Main 2024, 29 Jan Shift 1, Q1] Identify the incorrect pair from the following :
Not attempted
A
Fluoroapatite −3Ca3(PO4)2⋅CaF2-3{\mathrm{Ca}}_3{({\mathrm{PO}}_4)}_2\cdot {\mathrm{CaF}}_2
B
Carnallite −KCl⋅MgCl2⋅6H2O-\mathrm{KCl}\cdot {\mathrm{MgCl}}_2\cdot 6H_2O
C
Cryolite −Na3AlF6-{\mathrm{Na}}_3{\mathrm{AlF}}_6
D
Fluorspar −BF3-{\mathrm{BF}}_3
521
[JEE Main 2024, 29 Jan Shift 1, Q26] For a reaction taking place in three steps at same temperature, overall rate constant K=K1 K2 K3K=\frac{K_1{\ K}_2}{{\ K}_3} . If Ea1,Ea2{\mathrm{Ea}}_1,{\mathrm{Ea}}_2 and Ea3{\mathrm{Ea}}_3 are 40, 50 and 60 kJ/mol60\ \mathrm{kJ}/\mathrm{mol} respectively, the overall Ea\mathrm{Ea} is ________ kJ/mol\mathrm{kJ}/\mathrm{mol} .
Not attempted
Your answer: —
Correct answer: 30
522
[JEE Main 2024, 29 Jan Shift 1, Q21] The mass of zinc produced by the electrolysis of zine sulphate solution with a steady current of 0.015 A0.015\ A for 15 minutes is _________ ×10−4 g\times {10}^{-4}\ g . (Atomic mass of zinc =65.4 amu=65.4\ \mathrm{amu} )
Not attempted
Your answer: —
Correct answer: 46
523
[JEE Main 2024, 29 Jan Shift 1, Q30] The osmotic pressure of a dilute solution is 7×105 Pa7\times {10}^5\ \mathrm{Pa} at 273 K273\ K . Osmotic pressure of the same solution at 283 K283\ K is _________ ×104Nm−2\times {10}^4{\mathrm{Nm}}^{-2} .
Not attempted
Your answer: —
Correct answer: 73
524
[JEE Main 2024, 29 Jan Shift 1, Q4] Identify product A and product B :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
525
[JEE Main 2024, 29 Jan Shift 1, Q23] Consider the given reaction. The total number of oxygen atom/s present per molecule of the product (P)(P) is _________.
Not attempted
Your answer: —
Correct answer: 1
526
[JEE Main 2024, 29 Jan Shift 1, Q11] The difference in energy between the actual structure and the lowest energy resonance structure for the given compound is
Not attempted
A
electromeric energy
B
resonance energy
C
ionization energy
D
hyperconjugation energy
527
[JEE Main 2024, 29 Jan Shift 1, Q15] The interaction between π\pi bond and lone pair of electrons present on an adjacent atom is responsible for
Not attempted
A
Resonance effect
B
Electromeric effect
C
Hyperconjugation
D
Inductive effect
528
[JEE Main 2024, 29 Jan Shift 1, Q18] Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with FeSO4{\mathrm{FeSO}}_4 in presence of concentrated H2SO4H_2{\mathrm{SO}}_4 indicates the presence of element/s
Not attempted
A
Br
B
S
C
N and S
D
N
529
[JEE Main 2024, 29 Jan Shift 1, Q29] Number of compounds among the following which contain sulphur as heteroatom is ___________. Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine
Not attempted
Your answer: —
Correct answer: 2
530
[JEE Main 2024, 29 Jan Shift 1, Q6] Given below are two statements : Statement I : The electronegativity of group 14 elements from Si\mathrm{Si} to Pb\mathrm{Pb} , gradually decreases. Statement II : Group 14 contains non-metallic, metallic, as well as metalloid elements. In the light of the above statements, choose the most appropriate from the options given below :
Not attempted
A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are true
C
Both Statement I and Statement II are false
D
Statement I is true but Statement II is false
531
[JEE Main 2024, 29 Jan Shift 1, Q7] Chlorine undergoes disproportionation in alkaline medium as shown below : aCl2( g)+bOH(aq)−→cClO(aq)−+dCl(aq)−+eH2O(l){\mathrm{aCl}}_{2(\ g)}+b{\mathrm{OH}}_{(\mathrm{aq})}^-\to c{\mathrm{ClO}}_{(\mathrm{aq})}^-+d{\mathrm{Cl}}_{(\mathrm{aq})}^-+eH_2O_{(l)} The values of a,b,ca,b,c and dd in a balanced redox reaction are respectively :
Not attempted
A
3, 4, 4 and 2
B
1, 2, 1 and 1
C
2, 4, 1 and 3
D
2, 2, 1 and 3
532
[JEE Main 2024, 29 Jan Shift 1, Q24] For the reaction N2O4( g)⇄2NO2( g),Kp=0.492 atmN_2O_{4(\ g)}\rightleftarrows 2{\mathrm{NO}}_{2(\ g)},K_p=0.492\ \mathrm{atm} at 300 K.Kc300\ K.K_c for the reaction at same temperature is _________ ×10−2\times {10}^{-2} . (Given : R=0.082 L atm mol−1 K−1R=0.082\ L\ \mathrm{atm}{\ \mathrm{mol}}^{-1}{\ K}^{-1} )
Not attempted
Your answer: —
Correct answer: 2
533
[JEE Main 2024, 29 Jan Shift 1, Q14] Which of the following is not correct?
Not attempted
A
ΔG\Delta G is positive for a spontaneous reaction
B
ΔG\Delta G is positive for a non-spontaneous reaction
C
ΔG\Delta G is zero for a reversible reaction
D
ΔG\Delta G is negative for a spontaneous reaction
534
[JEE Main 2024, 29 Jan Shift 1, Q25] The number of species from the following which are paramagnetic and with bond order equal to one is _________. H2,He2+,O2+,N22−,O22−,F2,Ne2+,B2H_2,{\mathrm{He}}_2^+,O_2^+,N_2^{2-},O_2^{2-},F_2,{\mathrm{Ne}}_2^+,B_2
Not attempted
Your answer: —
Correct answer: 1
535
[JEE Main 2024, 29 Jan Shift 1, Q28] Number of compounds with one lone pair of electrons on central atom amongst following is _________. O3,H2O,SF4,ClF3,NH3,BrF5,XeF4O_3,H_2O,{\mathrm{SF}}_4,{\mathrm{ClF}}_3,{\mathrm{NH}}_3,{\mathrm{BrF}}_5,{\mathrm{XeF}}_4
Not attempted
Your answer: —
Correct answer: 4
536
[JEE Main 2024, 29 Jan Shift 1, Q2] Given below are two statements : one is labelled as Assertion A\mathbf{A} and the other is labelled as Reason R\mathbf{R} : Assertion A : The first ionisation enthalpy decreases across a period. Reason R\mathbf{R} : The increasing nuclear charge outweighs the shielding across the period. In the light of the above statements, choose the most appropriate from the options given below :
Not attempted
A
A\mathbf{A} is false but R\mathbf{R} is true
B
Both A\mathbf{A} and R\mathbf{R} are true but R\mathbf{R} is NOT the correct explanation of A\mathbf{A}
C
Both A\mathbf{A} and R\mathbf{R} are true and R\mathbf{R} is the correct explanation of A\mathbf{A}
D
A\mathbf{A} is true but R\mathbf{R} is false
537
[JEE Main 2024, 29 Jan Shift 1, Q10] The correct set of four quantum numbers for the valence electron of rubidium atom (Z=37)(Z=37) is :
Not attempted
A
5,1,1,+125,1,1,+\frac{1}{2}
B
5,0,0,+125,0,0,+\frac{1}{2}
C
5,0,1,+125,0,1,+\frac{1}{2}
D
5,1,0,+125,1,0,+\frac{1}{2}
538
[JEE Main 2024, 29 Jan Shift 1, Q22] A solution of H2SO4H_2{\mathrm{SO}}_4 is 31.4%H2SO431.4\%H_2{\mathrm{SO}}_4 by mass and has a density of 1.25 g/mL1.25\ g/\mathrm{mL} . The molarity of the H2SO4H_2{\mathrm{SO}}_4 solution is _________ MM (nearest integer) [Given molar mass of H2SO4=98 g mol−1H_2{\mathrm{SO}}_4=98\ g{\ \mathrm{mol}}^{-1} ]
Not attempted
Your answer: —
Correct answer: 4
539
[JEE Main 2024, 27 Jan Shift 2, Q6] Which structure of protein remains intact after coagulation of egg white on boiling?
Not attempted
A
Quaternary
B
Primary
C
Secondary
D
Tertiary
540
[JEE Main 2024, 27 Jan Shift 2, Q7] Identify B formed in the reaction. Cl−(CH2)4−Cl⟶ excess NH3 A⟶NaOHB+H2O+NaCl\mathrm{Cl}-{({\mathrm{CH}}_2)}_4-\mathrm{Cl}\overset{\text{ excess }{\mathrm{NH}}_3}{\longrightarrow }\ A\overset{\mathrm{NaOH}}{\longrightarrow }B+H_2O+\mathrm{NaCl}
Not attempted
A
(A)
B
(B)
C
ClˉN+H3−(CH2)4−N+H3Cl−\bar{\mathrm{Cl}}\overset{+}{N}H_3-{({\mathrm{CH}}_2)}_4-\overset{+}{N}H_3{\mathrm{Cl}}^-
D
H2N−(CH2)4−NH2H_2N-{({\mathrm{CH}}_2)}_4-{\mathrm{NH}}_2
541
[JEE Main 2024, 27 Jan Shift 2, Q27] 9.3 g9.3\ g of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is 100%100\% completed is _________ ×10−1 g\times {10}^{-1}\ g . (Given molar mass in g mol−1g{\ \mathrm{mol}}^{-1} N:14,O:16,C:12,H:1 ) \begin{array}{cc} & N:14,O:16, \\ & C:12,H:1\text{ ) }\end{array}
Not attempted
Your answer: —
Correct answer: 135
542
[JEE Main 2024, 27 Jan Shift 2, Q20] The molecular formula of second homologue in the homologous series of mono carboxylic acids is
Not attempted
A
C2H4O2C_2H_4O_2
B
C2H2O2C_2H_2O_2
C
CH2O{\mathrm{CH}}_2O
D
C3H6O2C_3H_6O_2
543
[JEE Main 2024, 27 Jan Shift 2, Q3] Major product formed in the following reaction is a mixture of :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
544
[JEE Main 2024, 27 Jan Shift 2, Q9] Phenolic group can be identified by a positive:
Not attempted
A
Tollen's test
B
Phthalein dye test
C
Carbylamine test
D
Lucas test
545
[JEE Main 2024, 27 Jan Shift 2, Q10] Match List - I with List - II. List - I (Reaction)List - II (Reagent(s))(A)reaction (A) in figure(I)Na2Cr2O7,H2SO4(B)reaction (B) in figure(II)(i)(NaOH), (ii)CH3Cl(C)reaction (C) in figure(III)(i)NaOH,CHCl3, (ii)NaOH, (iii)HCl(D)reaction (D) in figure(IV)(i)NaOH, (ii)CO2, (iii)HCl\displaystyle\begin{array}{|l|l|l|l|}\hline & \text{List - I (Reaction)} & & \text{List - II (Reagent(s))} \\ \hline \text{(A)} & \text{reaction (A) in figure} & \text{(I)} & {\mathrm{Na}}_2{\mathrm{Cr}}_2O_7,H_2{\mathrm{SO}}_4 \\ \hline \text{(B)} & \text{reaction (B) in figure} & \text{(II)} & \text{(i)} (NaOH) \text{, (ii)} {\mathrm{CH}}_3\mathrm{Cl} \\ \hline \text{(C)} & \text{reaction (C) in figure} & \text{(III)} & \text{(i)} \mathrm{NaOH},{\mathrm{CHCl}}_3 \text{, (ii)} \mathrm{NaOH} \text{, (iii)} \mathrm{HCl} \\ \hline \text{(D)} & \text{reaction (D) in figure} & \text{(IV)} & \text{(i)} \mathrm{NaOH} \text{, (ii)} {\mathrm{CO}}_2 \text{, (iii)} \mathrm{HCl} \\ \hline \end{array} Choose the correct answer from the options given below :
Not attempted
(A) (B) (C) (D)
A
 (A)-(II), (B)-(I), (C)-(III), (D)-(IV) \text{ (A)-(II), (B)-(I), (C)-(III), (D)-(IV) }
B
 (A)-(IV), (B)-(I), (C)-(III), (D)-(II) \text{ (A)-(IV), (B)-(I), (C)-(III), (D)-(II) }
C
 (A)-(IV), (B)-(III), (C)-(I), (D)-(II) \text{ (A)-(IV), (B)-(III), (C)-(I), (D)-(II) }
D
 (A)-(II), (B)-(III), (C)-(I), (D)-(IV) \text{ (A)-(II), (B)-(III), (C)-(I), (D)-(IV) }
546
[JEE Main 2024, 27 Jan Shift 2, Q17] The final product A, formed in the following reaction sequence is:
Not attempted
A
(A)
B
(B)
C
Ph−CH2−CH2−CH2−OH\mathrm{Ph}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{OH}
D
Ph−CH2−CH2−CH3\mathrm{Ph}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3
547
[JEE Main 2024, 27 Jan Shift 2, Q11] Which among the following halide/s will not show SN1S_N1 reaction: (A) H2C=CH−CH2ClH_2C=\mathrm{CH}-{\mathrm{CH}}_2\mathrm{Cl} (B) CH3−CH=CH−Cl{\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{Cl} (C) (D) Choose the most appropriate answer from the options given below :
Not attempted
A
(B) and (C) only
B
(A), (B) and (D) only
C
(B) only
D
(A) and (B) only
548
[JEE Main 2024, 27 Jan Shift 2, Q8] Identify from the following species in which d2sp3d^2{\mathrm{sp}}^3 hybridization is shown by central atom :
Not attempted
A
[Co(NH3)6]3+{[\mathrm{Co}{({\mathrm{NH}}_3)}_6]}^{3+}
B
SF6{\mathrm{SF}}_6
C
[Pt(Cl4)]2−{[\mathrm{Pt}({\mathrm{Cl}}_4)]}^{2-}
D
BrF5{\mathrm{BrF}}_5
549
[JEE Main 2024, 27 Jan Shift 2, Q22] The Spin only magnetic moment value of square planar complex [Pt(NH3)2Cl(NH2CH3)]Cl[\mathrm{Pt}{({\mathrm{NH}}_3)}_2\mathrm{Cl}({\mathrm{NH}}_2{\mathrm{CH}}_3)]\mathrm{Cl} is _________ B.M. (Nearest integer) (Given atomic number for Pt=78\mathrm{Pt}=78 )
Not attempted
Your answer: —
Correct answer: 0
550
[JEE Main 2024, 27 Jan Shift 2, Q14] Given below are two statements : Statement (I) : In the Lanthanoids, the formation Ce+4{\mathrm{Ce}}^{+4} is favoured by its noble gas configuration. Statement (II) : Ce+4{\mathrm{Ce}}^{+4} is a strong oxidant reverting to the common +3 state. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are false
B
Statement I is true but Statement II is false
C
Both Statement I and Statement II are true
D
Statement I is false but Statement II is true
551
[JEE Main 2024, 27 Jan Shift 2, Q15] Choose the correct option having all the elements with d10d^{10} electronic configuration from the following :
Not attempted
A
46Pd,28Ni,26Fe,24Cr{}^{46}\mathrm{Pd},{}^{28}\mathrm{Ni},{}^{26}\mathrm{Fe},{}^{24}\mathrm{Cr}
B
29Cu,30Zn,48Cd,47Ag{}^{29}\mathrm{Cu},{}^{30}\mathrm{Zn},{}^{48}\mathrm{Cd},{}^{47}\mathrm{Ag}
C
27Co,28Ni,26Fe,24Cr{}^{27}\mathrm{Co},{}^{28}\mathrm{Ni},{}^{26}\mathrm{Fe},{}^{24}\mathrm{Cr}
D
28Ni,24Cr,26Fe,29Cu{}^{28}\mathrm{Ni},{}^{24}\mathrm{Cr},{}^{26}\mathrm{Fe},{}^{29}\mathrm{Cu}
552
[JEE Main 2024, 27 Jan Shift 2, Q1] Identity the incorrect pair from the following :
Not attempted
A
Haber process - Iron
B
Polythene preparation - TiCl4,Al(CH3)3{\mathrm{TiCl}}_4,\mathrm{Al}{({\mathrm{CH}}_3)}_3
C
Photography - AgBr
D
Wacker process - PtCl2\mathrm{Pt}{\mathrm{Cl}}_2
553
[JEE Main 2024, 27 Jan Shift 2, Q24] Time required for completion of 99.9%99.9\% of a First order reaction is ________ times of half life (t1/2)(t_{1/2}) of the reaction.
Not attempted
Your answer: —
Correct answer: 10
554
[JEE Main 2024, 27 Jan Shift 2, Q12] Which of the following statements is not correct about rusting of iron?
Not attempted
A
Rusting of iron is envisaged as setting up of electrochemical cell on the surface of iron object.
B
Dissolved acidic oxides SO2,NO2{\mathrm{SO}}_2,{\mathrm{NO}}_2 in water act as catalyst in the process of rusting.
C
Coating of iron surface by tin prevents rusting, even if the tin coating is peeling off.
D
When pH\mathrm{pH} lies above 9 or 10, rusting of iron does not take place.
555
[JEE Main 2024, 27 Jan Shift 2, Q25] The hydrogen electrode is dipped in a solution of pH=3\mathrm{pH}=3 at 25∘C{25}^{\circ}C . The potential of the electrode will be _________ ×10−2 V\times {10}^{-2}\ V . (2.303RTF=0.059 V)(\frac{2.303\mathrm{RT}}{F}=0.059\ V)
Not attempted
Your answer: —
Correct answer: 18
556
[JEE Main 2024, 27 Jan Shift 2, Q19] The quantity which changes with temperature is :
Not attempted
A
Molality
B
Molarity
C
Mole fraction
D
Mass percentage
557
[JEE Main 2024, 27 Jan Shift 2, Q16] The incorrect statement regarding conformations of ethane is :
Not attempted
A
The dihedral angle in staggered conformation is 60∘{60}^{\circ} .
B
Ethane has infinite number of conformations.
C
Eclipsed conformation is the most stable conformation.
D
The conformations of ethane are inter-convertible to one-another.
558
[JEE Main 2024, 27 Jan Shift 2, Q2] The order of relative stability of the contributing structure is : Choose the correct answer from the options given below :
Not attempted
A
I = II = III
B
I > II > III
C
III > II > I
D
II > I > III
559
[JEE Main 2024, 27 Jan Shift 2, Q5] The technique used for purification of steam volatile water immiscible substances is :
Not attempted
A
Fractional distillation
B
Distillation
C
Fractional distillation under reduced pressure
D
Steam distillation
560
[JEE Main 2024, 27 Jan Shift 2, Q18] Bond line formula of HOCH(CN) 2{}_2 is :
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
561
[JEE Main 2024, 27 Jan Shift 2, Q23] Total number of compounds with Chiral carbon atoms from following is _________.
Not attempted
Your answer: —
Correct answer: 5
562
[JEE Main 2024, 27 Jan Shift 2, Q4] Given below are two statements : Statement (I) : Oxygen being the first member of group 16 exhibits only -2 oxidation state. Statement (II) : Down the group 16 stability of +4 oxidation state decreases and +6 oxidation state increases. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is correct but Statement II is incorrect
B
Both Statement I and Statement II are incorrect
C
Statement I is incorrect but Statement II is correct
D
Both Statement I and Statement II are correct
563
[JEE Main 2024, 27 Jan Shift 2, Q13] Which of the following cannot function as an oxidising agent?
Not attempted
A
SO42−{\mathrm{SO}}_4^{2-}
B
MnO4−{\mathrm{MnO}}_4^-
C
N3−N^{3-}
D
BrO3−{\mathrm{BrO}}_3^-
564
[JEE Main 2024, 27 Jan Shift 2, Q21] 1 mole of PbS\mathrm{PbS} is oxidised by " XX " moles of O3O_3 to get " YY " moles of O2O_2 . X+Y=X+Y= _________.
Not attempted
Your answer: —
Correct answer: 8
565
[JEE Main 2024, 27 Jan Shift 2, Q30] For a certain thermochemical reaction M→NM\to N at T=400 K,ΔH⊖=77.2 kJ mol−1,ΔS=122 JK−1,log⁡T=400\ K,\Delta H^{\ominus}=77.2\ \mathrm{kJ}{\ \mathrm{mol}}^{-1},\Delta S=122{\ \mathrm{JK}}^{-1},\log equilibrium constant (log⁡K)(\log K) is __________ ×10−1\times {10}^{-1} .
Not attempted
Your answer: —
Correct answer: 37
566
[JEE Main 2024, 27 Jan Shift 2, Q26] The number of non-polar molecules from the following is _________. HF,H2O,SO2,H2,CO2,CH4,NH3,HCl,CHCl3,BF3\mathrm{HF},H_2O,{\mathrm{SO}}_2,H_2,{\mathrm{CO}}_2,{\mathrm{CH}}_4,{\mathrm{NH}}_3,\mathrm{HCl},{\mathrm{CHCl}}_3,{\mathrm{BF}}_3
Not attempted
Your answer: —
Correct answer: 4
567
[JEE Main 2024, 27 Jan Shift 2, Q29] Total number of ions from the following with noble gas configuration is _________. Sr2+(z=38),Cs+(z=55),La2+(z=57),Pb2+(z=82),Yb2+(z=70){\mathrm{Sr}}^{2+}(z=38),{\mathrm{Cs}}^+(z=55),{\mathrm{La}}^{2+}(z=57),{\mathrm{Pb}}^{2+}(z=82),{\mathrm{Yb}}^{2+}(z=70) and Fe2+(z=26){\mathrm{Fe}}^{2+}(z=26)
Not attempted
Your answer: —
Correct answer: 2
568
[JEE Main 2024, 27 Jan Shift 2, Q28] Volume of 3M NaOH3M\ \mathrm{NaOH} (formula weight 40 g mol−140\ g{\ \mathrm{mol}}^{-1} ) which can be prepared from 84 g84\ g of NaOH\mathrm{NaOH} is __________ ×10−1dm3\times {10}^{-1}{\mathrm{dm}}^3 .
Not attempted
Your answer: —
Correct answer: 7
569
[JEE Main 2024, 27 Jan Shift 1, Q1] Two nucleotides are joined together by a linkage known as :
Not attempted
A
Phosphodiester linkage
B
Glycosidic linkage
C
Disulphide linkage
D
Peptide linkage
570
[JEE Main 2024, 27 Jan Shift 1, Q4] Which of the following is strongest Bronsted base?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
571
[JEE Main 2024, 27 Jan Shift 1, Q6] Which of the following has highly acidic hydrogen?
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
572
[JEE Main 2024, 27 Jan Shift 1, Q11] Given below are two statements : Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol. Statement (II) : Ethanol will give immediate turbidity with Lucas reagent. In the light of the above statements, choose the correct answer from the options given below :
Not attempted
A
Statement I is true but Statement II is false
B
Both Statement I and Statement II are true
C
Both Statement I and Statement II are false
D
Statement I is false but Statement II is true
573
[JEE Main 2024, 27 Jan Shift 1, Q12] The ascending order of acidity of −OH-\mathrm{OH} group in the following compounds is : Choose the correct answer from the options given below:
Not attempted
A
(A) < (D) < (C) < (B) < (E)
B
(C) < (A) < (D) < (B) < (E)
C
(C) < (D) < (B) < (A) < (E)
D
(A) < (C) < (D) < (B) < (E)
574
[JEE Main 2024, 27 Jan Shift 1, Q19] The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is ;
Not attempted
A
Retention occurs in SN1S_N1 reaction and inversion occurs in SN2S_N2 reaction.
B
Racemisation occurs in SN1S_N1 reaction and retention occurs in SN2S_N2 reaction.
C
Racemisation occurs in both SN1S_N1 and SN2S_N2 reactions.
D
Racemisation occurs in SN1S_N1 reaction and inversion occurs in SN2S_N2 reaction.
575
[JEE Main 2024, 27 Jan Shift 1, Q8] Consider the following complex ions P=[FeF6]3−Q=[V(H2O)6]2+R=[Fe(H2O)6]2+\begin{array}{cc} & P={[{\mathrm{FeF}}_6]}^{3-} \\ & Q={[V{(H_2O)}_6]}^{2+} \\ & R={[\mathrm{Fe}{(H_2O)}_6]}^{2+}\end{array} The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is :
Not attempted
A
R < Q < P
B
R < P < Q
C
Q < R < P
D
Q < P < R
576
[JEE Main 2024, 27 Jan Shift 1, Q5] Which of the following electronic configuration would be associated with the highest magnetic moment?
Not attempted
A
[Ar]3 d7[\mathrm{Ar}]3{\ d}^7
B
[Ar]3 d8[\mathrm{Ar}]3{\ d}^8
C
[Ar]3 d3[\mathrm{Ar}]3{\ d}^3
D
[Ar]3 d6[\mathrm{Ar}]3{\ d}^6
577
[JEE Main 2024, 27 Jan Shift 1, Q18] NaCl\mathrm{NaCl} reacts with conc. H2SO4H_2{\mathrm{SO}}_4 and K2Cr2O7K_2{\mathrm{Cr}}_2O_7 to give reddish fumes (B), which react with NaOH\mathrm{NaOH} to give yellow solution (C). (B) and (C) respectively are ;
Not attempted
A
CrO2Cl2,Na2CrO4{\mathrm{CrO}}_2{\mathrm{Cl}}_2,{\mathrm{Na}}_2{\mathrm{CrO}}_4
B
Na2CrO4,CrO2Cl2{\mathrm{Na}}_2{\mathrm{CrO}}_4,{\mathrm{CrO}}_2{\mathrm{Cl}}_2
C
CrO2Cl2,KHSO4{\mathrm{CrO}}_2{\mathrm{Cl}}_2,{\mathrm{KHSO}}_4
D
CrO2Cl2,Na2Cr2O7{\mathrm{CrO}}_2{\mathrm{Cl}}_2,{\mathrm{Na}}_2{\mathrm{Cr}}_2O_7
578
[JEE Main 2024, 27 Jan Shift 1, Q20] The electronic configuration for Neodymium is: [Atomic Number for Neodymium 60]
Not attempted
A
[Xe]4f46 s2[\mathrm{Xe}]4f^46{\ s}^2
B
[Xe]5f47 s2[\mathrm{Xe}]5f^47{\ s}^2
C
[Xe]4f66 s2[\mathrm{Xe}]4f^66{\ s}^2
D
[Xe]4f15 d16 s2[\mathrm{Xe}]4f^15{\ d}^16{\ s}^2
579
[JEE Main 2024, 27 Jan Shift 1, Q22] Consider the following data for the given reaction 2HI(g)→H2( g)+I2( g)2{\mathrm{HI}}_{(g)}\to H_{2(\ g)}+I_{2(\ g)} The order of the reaction is _________.
Not attempted
Your answer: —
Correct answer: 2
580
[JEE Main 2024, 27 Jan Shift 1, Q21] The mass of silver (Molar mass of Ag:108 gmol−1\mathrm{Ag}:108{\ \mathrm{gmol}}^{-1} ) displaced by a quantity of electricity which displaces 5600 mL5600\ \mathrm{mL} of O2O_2 at S.T.P. will be ______ g.
Not attempted
Your answer: —
Correct answer: 108
581
[JEE Main 2024, 27 Jan Shift 1, Q7] A solution of two miscible liquids showing negative deviation from Raoult's law will have :
Not attempted
A
increased vapour pressure, increased boiling point
B
increased vapour pressure, decreased boiling point
C
decreased vapour pressure, decreased boiling point
D
decreased vapour pressure, increased boiling point
582
[JEE Main 2024, 27 Jan Shift 1, Q25] 3-Methylhex-2-ene on reaction with HBr\mathrm{HBr} in presence of peroxide forms an addition product (A). The number of possible stereoisomers for ' AA ' is ________.
Not attempted
Your answer: —
Correct answer: 4
583
[JEE Main 2024, 27 Jan Shift 1, Q26] Among the given organic compounds, the total number of aromatic compounds is
Not attempted
Your answer: —
Correct answer: 3
584
[JEE Main 2024, 27 Jan Shift 1, Q2] Highest enol content will be shown by:
Not attempted
A
(A)
B
(B)
C
(C)
D
(D)
585
[JEE Main 2024, 27 Jan Shift 1, Q14] Cyclohexene is ________ type of an organic compound.
Not attempted
A
Benzenoid aromatic
B
Benzenoid non-aromatic
C
Acyclic
D
Alicyclic
586
[JEE Main 2024, 27 Jan Shift 1, Q17] IUPAC name of following compound (P) is:
Not attempted
A
l-Ethyl-5, 5-dimethylcyclohexane
B
3-Ethyl-1,1-dimethylcyclohexane
C
l-Ethyl-3, 3-dimethylcyclohexane
D
1,1-Dimethyl-3-ethylcyclohexane
587
[JEE Main 2024, 27 Jan Shift 1, Q27] Among the following, total number of meta directing functional groups is (Integer based) −OCH3,−NO2,−CN,−CH3−NHCOCH3,−COR,−OH,−COOH,−Cl-{\mathrm{OCH}}_3,-{\mathrm{NO}}_2,-\mathrm{CN},-{\mathrm{CH}}_3-{\mathrm{NHCOCH}}_3,-\mathrm{COR},-\mathrm{OH},-\mathrm{COOH},-\mathrm{Cl}
Not attempted
Your answer: —
Correct answer: 4
588
[JEE Main 2024, 27 Jan Shift 1, Q3] Element not showing variable oxidation state is :
Not attempted
A
Bromine
B
Iodine
C
Chlorine
D
Fluorine
589
[JEE Main 2024, 27 Jan Shift 1, Q13] Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Melting point of Boron (2453 K) is unusually high in group 13 elements. Reason (R) : Solid Boron has very strong crystalline lattice. In the light of the above statements, choose the most appropriate answer from the options given below ;
Not attempted
A
Both (A) and (R) are correct but (R) Is not the correct explanation of (A)
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
590
[JEE Main 2024, 27 Jan Shift 1, Q15] Yellow compound of lead chromate gets dissolved on treatment with hot NaOH\mathrm{NaOH} solution. The product of lead formed is a :
Not attempted
A
Tetraanionic complex with coordination number six
B
Neutral complex with coordination number four
C
Dianionic complex with coordination number six
D
Dianionic complex with coordination number four
591
[JEE Main 2024, 27 Jan Shift 1, Q30] From the given list, the number of compounds with +4 oxidation state of Sulphur ________. SO3,H2SO3,SOCl2,SF4,BaSO4,H2S2O7{\mathrm{SO}}_3,H_2{\mathrm{SO}}_3,{\mathrm{SOCl}}_2,{\mathrm{SF}}_4,{\mathrm{BaSO}}_4,H_2S_2O_7
Not attempted
Your answer: —
Correct answer: 3
592
[JEE Main 2024, 27 Jan Shift 1, Q16] Given below are two statements : Statement (I) : Aqueous solution of ammonium carbonate is basic. Statement (II) : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on KaK_a and KbK_b value of acid and the base forming it. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Both Statement I and Statement II are correct
B
Statement I is correct but Statement II is incorrect
C
Both Statement I and Statement II are incorrect
D
Statement I is incorrect but Statement II is correct
593
[JEE Main 2024, 27 Jan Shift 1, Q24] If three moles of an ideal gas at 300 K300\ K expand isothermally from 30 dm330{\ \mathrm{dm}}^3 to 45 dm345{\ \mathrm{dm}}^3 against a constant opposing pressure of 80 kPa80\ \mathrm{kPa} , then the amount of heat transferred is _______ J.
Not attempted
Your answer: —
Correct answer: 1200
594
[JEE Main 2024, 27 Jan Shift 1, Q9] Choose the polar molecule from the following:
Not attempted
A
CCl4{\mathrm{CCl}}_4
B
CO2{\mathrm{CO}}_2
C
CH2=CH2{\mathrm{CH}}_2={\mathrm{CH}}_2
D
CHCl3{\mathrm{CHCl}}_3
595
[JEE Main 2024, 27 Jan Shift 1, Q29] Sum of bond order of CO and NO +{}^+ is ________.
Not attempted
Your answer: —
Correct answer: 6
596
[JEE Main 2024, 27 Jan Shift 1, Q10] Given below are two statements : Statement (I) : The 4f4f and 5f5f - series of elements are placed separately in the Periodic table to preserve the principle of classification. Statement (II) : S-block elements can be found in pure form in nature. In the light of the above statements, choose the most appropriate answer from the options given below :
Not attempted
A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are true
C
Statement I is true but Statement II is false
D
Both Statement I and Statement II are false
597
[JEE Main 2024, 27 Jan Shift 1, Q28] The number of electrons present in all the completely filled subshells having n=4n=4 and s=+12s=+\frac{1}{2} is _______. (Where n=n= principal quantum number and s=s= spin quantum number)
Not attempted
Your answer: —
Correct answer: 16
598
[JEE Main 2024, 27 Jan Shift 1, Q23] Mass of methane required to produce 22 g22\ g of CO2{\mathrm{CO}}_2 after complete combustion is _______ g. (Given Molar mass in g mol-1 C=12.0C=12.0 , H=1.0H=1.0 , O=16.0)O=16.0)
Not attempted
Your answer: —
Correct answer: 8
CH₄ + 2O₂ → CO₂ + 2H₂O.
Deconstruction\textbf{Deconstruction}: Moles. Strategy\textbf{Strategy}: Mass. Execution\textbf{Execution}: 22 g CO₂ = 0.5 mol. CH₄ = 0.5 × 16 = 8 g. Verification\textbf{Verification}: ✓\checkmark Final Answer\textbf{Final Answer}: 8