Other Chemistry · JEE Main previous year questions

650 questions asked across 20 exam years, newest first

Other Chemistry has appeared 650 times in JEE Main papers between 2002 and 2026, about 4.7 questions per paper, from 25 per paper in 2002 to 2.6 per paper in 2026. Every question is listed below with its answer and the paper it came from. Use Practise this topic to attempt them as a timed set.

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2024 85 questions

Q622024 · 5 Apr 2024 · Shift 2
Match List I with List II. $A. B. C. D. LIST I ICl IC l_{3} Cl F_{5} I F_{7} I. II. III. IV. LIST II T - shape Square pyramidal Pentagonal bipyramidal Linear$ Choose the correct answer from the options given below :
1. A.(A)-(I), (B)-(IV), (C)-(III), (D)-(II)
2. B.(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
3. C.(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
4. D.(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
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Answer: B
Q632024 · 5 Apr 2024 · Shift 2
1. A.2-carboxy-4-hydroxyhept-7-enal
2. B.2-formyl-4-hydroxyhept-7-enoic acid
3. C.2-carboxy-4-hydroxyhept-6-enal
4. D.2-formyl-4-hydroxyhept-6-enoic acid
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Answer: D
Q702024 · 5 Apr 2024 · Shift 2
1. A.picric acid
2. B.oxalic acid
3. C.adipic acid
4. D.acetic acid
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Answer: C
Q752024 · 5 Apr 2024 · Shift 2
The number of ions from the following that have the ability to liberate hydrogen from a dilute acid is ____. $Ti^{2 +}$ , $Cr^{2 +}$ and $V^{2 +}$
1. A.1
2. B.2
3. C.3
4. D.0
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Answer: C
Q772024 · 5 Apr 2024 · Shift 2
The quantity of silver deposited when one coulomb charge is passed through $AgN O_{3}$ solution :
1. A. $0.1 g$ atom of silver
2. B.1 chemical equivalent of silver
3. C. $1 g$ of silver
4. D.1 electrochemical equivalent of silver
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Answer: D
Q642024 · 4 Apr 2024 · Shift 1
1. A.(A) - (I), (B) - (II), (C) - (IV), (D) - (III)
2. B.(A) - (II), (B) - (IV), (C) - (III), (D) - (I)
3. C.(A) - (III), (B) - (I), (C) - (II), (D) - (IV)
4. D.(A) - (IV), (B) - (III), (C) - (I), (D) - (II)
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Answer: D
Q742024 · 4 Apr 2024 · Shift 1
Which among the following is incorrect statement?
1. A.The electromeric effect is a temporary effect
2. B.Hydrogen ion $(H^{+})$ shows negative electromeric effect
3. C.The organic compound shows electromeric effect in the presence of the reagent only.
4. D.Electromeric effect dominates over inductive effect
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Answer: B
Q752024 · 4 Apr 2024 · Shift 1
One of the commonly used electrode is calomel electrode. Under which of the following categories, calomel electrode comes?
1. A.Metal ion - Metal electrodes
2. B.Oxidation - Reduction electrodes
3. C.Metal - Insoluble Salt - Anion electrodes
4. D.Gas - Ion electrodes
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Answer: C
Q792024 · 4 Apr 2024 · Shift 1
What pressure (bar) of $H_{2}$ would be required to make emf of hydrogen electrode zero in pure water at $2 5^{\circ} C$ ?
1. A.0.5
2. B. $1 0^{- 14}$
3. C.1
4. D. $1 0^{- 7}$
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Answer: B
Q802024 · 4 Apr 2024 · Shift 1
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
1. A.7
2. B.3
3. C.5
4. D.6
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Answer: B
Q892024 · 4 Apr 2024 · Shift 1· Numerical answer
Number of molecules/species from the following having one unpaired electron is ____. $O_{2}, O_{2}^{- 1}, NO, C N^{- 1}, O_{2}^{2 -}$
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Answer: 2
Q702024 · 4 Apr 2024 · Shift 2
When $MnO_{2}$ and $H_{2} SO_{4}$ are added to a salt (A), a greenish yellow gas is liberated. The salt (A) is :
1. A. $NH_{4} Cl$
2. B. $CaI_{2}$
3. C. $KNO_{3}$
4. D. $NaBr$
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Answer: A
Q722024 · 4 Apr 2024 · Shift 2
Choose the Incorrect Statement about Dalton's Atomic Theory
1. A.Compounds are formed when atoms of different elements combine in any ratio.
2. B.Matter consists of indivisible atoms.
3. C.chemical reactions involve reorganization of atoms
4. D.All the atoms of a given element have identical properties including identical mass.
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Answer: A
Q742024 · 4 Apr 2024 · Shift 2
The number of species from the following that have pyramidal geometry around the central atom is _________ $S_{2} O_{3}^{2 -}, SO_{4}^{2 -}, SO_{3}^{2 -}, S_{2} O_{7}^{2 -}$
1. A.4
2. B.3
3. C.2
4. D.1
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Answer: D
Q812024 · 1 Feb 2024 · Shift 1· Numerical answer
The number of white coloured salts, among the following is (a) $SrS O_{4}$ (b) $Mg (N H_{4}) P O_{4}$ (c) $BaCr O_{4}$ (d) $Mn (OH)_{2}$ (e) $PbS O_{4}$ (f) $PbCr O_{4}$ (g) $AgBr$ (h) $Pb I_{2}$ (i) $Ca C_{2} O_{4}$ (j) $[Fe (OH)_{2} (C H_{3} COO)]$
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Answer: 5
Q832024 · 1 Feb 2024 · Shift 1· Numerical answer
The potential for the given half cell at $298 K$ is $(-)$ ________ $\times 1 0^{- 2} V$ (Nearest integer) $2 H_{(aq)}^{+} + 2 e^{-} ⟶ H_{2} (g)$ $[H^{+}] = 1 M$ , $P_{H_{2}} = 2 atm$ (Given : $2.303 RT/F = 0.06 V$ , $lo g 2 = 0.3$ )
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Answer: 1
Q842024 · 1 Feb 2024 · Shift 1· Numerical answer
Among the following oxides of p-block elements, number of oxides having amphoteric nature is ________ . $C l_{2} O_{7}$ , $CO$ , $Pb O_{2}$ , $N_{2} O$ , $NO$ , $A l_{2} O_{3}$ , $Si O_{2}$ , $N_{2} O_{5}$ , $Sn O_{2}$
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Answer: 3
Q862024 · 1 Feb 2024 · Shift 1· Numerical answer
The number of molecules/ion/s having trigonal bipyramidal shape is ________ . $P F_{5}$ , $Br F_{5}$ , $PC l_{5}$ , $[PtC l_{4}]^{2 -}$ , $B F_{3}$ , $Fe (CO)_{5}$
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Answer: 3
Q612024 · 1 Feb 2024 · Shift 2
1. A. $A : n-Pentane B : Cis-2-butene$
2. B. $A : 2-Pentyne B : Cis-2-butene$
3. C. $A : n-Pentane B : trans-2-butene$
4. D. $A : 2-Pentyne B : trans-2-butene$
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Answer: D
Q642024 · 1 Feb 2024 · Shift 2
The set of meta directing functional groups from the following sets is :
1. A. $- CN, - N H_{2}, - NHR, - OC H_{3}$
2. B. $- CN, - CHO, - NHCOC H_{3}, - COOR$
3. C. $- N O_{2}, - N H_{2}, - COOH, - COOR$
4. D. $- N O_{2}, - CHO, - S O_{3} H, - COR$
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Answer: D
Q772024 · 1 Feb 2024 · Shift 2
Given below are two statements : Statement (I) : A $π$ bonding MO has lower electron density above and below the inter-nuclear axis. Statement (II) : The $π^{*}$ 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 :
1. A.Both Statement I and Statement II are true
2. B.Both Statement I and Statement II are false
3. C.Statement I is true but Statement II is false
4. D.Statement I is false but Statement II is true
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Answer: D
Q862024 · 1 Feb 2024 · Shift 2· Numerical answer
The amount of electricity in Coulomb required for the oxidation of $1 mol$ of $H_{2} O$ to $O_{2}$ is ________ $\times 1 0^{5} C$ .
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Answer: 2
Q632024 · 31 Jan 2024 · Shift 1
The compound that is white in color is
1. A.ammonium sulphide
2. B.ammonium arsinomolybdate
3. C.lead iodide
4. D.lead sulphate
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Answer: D
Q692024 · 31 Jan 2024 · Shift 1
The product (C) in the below mentioned reaction is : $C H_{3} - C H_{2} - C H_{2} - Br KO H_{(alc)} Δ A HBr B Δ KO H_{(aq)} C$
1. A.Propan-1-ol
2. B.Propyne
3. C.Propan-2-ol
4. D.Propene
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Answer: C
Q882024 · 31 Jan 2024 · Shift 1· Numerical answer
Molar mass of the salt from $NaBr, NaN O_{3}, KI$ and $Ca F_{2}$ which does not evolve coloured vapours on heating with concentrated $H_{2} S O_{4}$ is ____ $g mo l^{- 1}$ . (Molar mass in $g mo l^{- 1}$ : $Na : 23, N : 14, K : 39, O : 16, Br : 80, I : 127, F : 19, Ca : 40$ )
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Answer: 78