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.

Year-wise papers Topic-wise questions

Practise this topic

2024 85 questions

Q672024 · 31 Jan 2024 · Shift 2
Identify structure of 2,3-dibromo-1-phenylpentane.
1. A.[structure: $C_{6} H_{5} - CHBr - C H_{2} - CHBr - C H_{2} - C H_{3}$ ]
2. B.[structure: $C_{6} H_{5} - CHBr - CHBr - C H_{2} - C H_{2} - C H_{3}$ ]
3. C.[structure: $C_{6} H_{5} - C H_{2} - CHBr - CHBr - C H_{2} - C H_{3}$ ]
4. D.[structure: $C_{6} H_{5} - C H_{2} - C H_{2} - CHBr - CHBr - C H_{3}$ ]
Show answer
Answer: C
Q702024 · 31 Jan 2024 · Shift 2
Choose the correct statements from the following A. $M n_{2} O_{7}$ is an oil at room temperature B. $V_{2} O_{4}$ reacts with acid to give $V O_{2}^{2 +}$ C. $CrO$ is a basic oxide D. $V_{2} O_{5}$ does not react with acid Choose the correct answer from the options given below :
1. A.A, B and D only
2. B.A, B and C only
3. C.A and C only
4. D.B and C only
Show answer
Answer: C
Q712024 · 31 Jan 2024 · Shift 2
Select the option with correct property -
1. A. $[Ni (CO)_{4}]$ and $[NiC l_{4}]^{2 -}$ both Paramagnetic
2. B. $[Ni (CO)_{4}]$ and $[NiC l_{4}]^{2 -}$ both Diamagnetic
3. C. $[NiC l_{4}]^{2 -}$ Diamagnetic, $[Ni (CO)_{4}]$ Paramagnetic
4. D. $[Ni (CO)_{4}]$ Diamagnetic, $[NiC l_{4}]^{2 -}$ Paramagnetic
Show answer
Answer: D
Q722024 · 31 Jan 2024 · Shift 2
Which of the following is least ionic?
1. A. $CoC l_{2}$
2. B. $KCl$
3. C. $BaC l_{2}$
4. D. $AgCl$
Show answer
Answer: D
Q742024 · 31 Jan 2024 · Shift 2
Identify the name reaction. [structure: benzene] $CO, HCl Anhyd. AlC l_{3} /CuCl$ [structure: benzaldehyde, $C_{6} H_{5} CHO$ ]
1. A.Stephen Reaction
2. B.Etard Reaction
3. C.Gatterman - Koch Reaction
4. D.Rosenmund Reduction
Show answer
Answer: C
Q802024 · 31 Jan 2024 · Shift 2
A sample of $CaC O_{3}$ and $MgC O_{3}$ weighed $2.21 g$ is ignited to constant weight of $1.152 g$ . The composition of mixture is : (Given molar mass in $g mo l^{- 1}$ $CaC O_{3} : 100, MgC O_{3} : 84$ )
1. A. $1.187 g CaC O_{3} + 1.187 g MgC O_{3}$
2. B. $1.187 g CaC O_{3} + 1.023 g MgC O_{3}$
3. C. $1.023 g CaC O_{3} + 1.187 g MgC O_{3}$
4. D. $1.023 g CaC O_{3} + 1.023 g MgC O_{3}$
Show answer
Answer: B
Q862024 · 31 Jan 2024 · Shift 2· Numerical answer
A compound $(x)$ with molar mass $108 g mo l^{- 1}$ undergoes acetylation to give product with molar mass $192 g mo l^{- 1}$ . The number of amino groups in the compound $(x)$ is ____.
Show answer
Answer: 2
Q902024 · 31 Jan 2024 · Shift 2· Numerical answer
$r = k [A]$ for a reaction, $50%$ of $A$ is decomposed in 120 minutes. The time taken for $90%$ decomposition of $A$ is ____ minutes.
Show answer
Answer: 399
Q622024 · 30 Jan 2024 · Shift 1
1. A.
2. B.
3. C.
4. D.
Show answer
Answer: D
Q652024 · 30 Jan 2024 · Shift 1
1. A.Wolff-Kishner reduction
2. B.Etard reduction
3. C.Stephen reduction
4. D.Rosenmund reduction
Show answer
Answer: D
Q672024 · 30 Jan 2024 · Shift 1
1. A.
2. B.
3. C.
4. D.
Show answer
Answer: B
Q692024 · 30 Jan 2024 · Shift 1
Match List I with List II. | | List I (Molecule) | | List II (Shape) | |---|---|---|---| | (A) | $Br F_{5}$ | (I) | T-Shape | | (B) | $H_{2} O$ | (II) | See saw | | (C) | $Cl F_{3}$ | (III) | Bent | | (D) | $S F_{4}$ | (IV) | Square pyramidal | Choose the correct answer from the options given below :
1. A.(A)-(I), (B)-(II), (C)-(IV), (D)-(III)
2. B.(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
3. C.(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
4. D.(A)-(II), (B)-(I), (C)-(III), (D)-(IV)
Show answer
Answer: B
Q702024 · 30 Jan 2024 · Shift 1
Match List I with List II. | | List I (Species) | | List II (Electronic distribution) | |---|---|---|---| | (A) | $C r^{+ 2}$ | (I) | $3 d^{8}$ | | (B) | $M n^{+}$ | (II) | $3 d^{3} 4 s^{1}$ | | (C) | $N i^{+ 2}$ | (III) | $3 d^{4}$ | | (D) | $V^{+}$ | (IV) | $3 d^{5} 4 s^{1}$ | Choose the correct answer from the options given below :
1. A.(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
2. B.(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
3. C.(A)-(IV), (B)-(III), (C)-(I), (D)-(II)
4. D.(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
Show answer
Answer: A
Q802024 · 30 Jan 2024 · Shift 1
1. A.
2. B.
3. C.
4. D.
Show answer
Answer: C
Q832024 · 30 Jan 2024 · Shift 1· Numerical answer
$0.05 cm$ thick coating of silver is deposited on a plate of $0.05 m^{2}$ area. The number of silver atoms deposited on plate are _________ $\times 1 0^{23}$ . (At mass $Ag = 108$ , $d = 7.9 g cm^{- 3}$ )
Show answer
Answer: 11
Q862024 · 30 Jan 2024 · Shift 1· Numerical answer
$2 Mn O_{4}^{-} + b I^{-} + c H_{2} O \to x I_{2} + y Mn O_{2} + z O H^{-}$ If the above equation is balanced with integer coefficients, the value of $z$ is _________.
Show answer
Answer: 8
Q612024 · 29 Jan 2024 · Shift 1
Identify the incorrect pair from the following :
1. A.Fluoroapatite $- 3 Ca_{3} (PO_{4})_{2} \cdot CaF_{2}$
2. B.Carnallite $- KCl \cdot MgCl_{2} \cdot 6 H_{2} O$
3. C.Cryolite $- Na_{3} AlF_{6}$
4. D.Fluorspar $- BF_{3}$
Show answer
Answer: D
Q742024 · 29 Jan 2024 · Shift 1
Which of the following is not correct?
1. A. $Δ G$ is positive for a spontaneous reaction
2. B. $Δ G$ is positive for a non-spontaneous reaction
3. C. $Δ G$ is zero for a reversible reaction
4. D. $Δ G$ is negative for a spontaneous reaction
Show answer
Answer: A
Q772024 · 29 Jan 2024 · Shift 1
$KMn O_{4}$ decomposes on heating at $513 K$ to form $O_{2}$ along with
1. A. $K_{2} Mn O_{4} & Mn$
2. B. $Mn O_{2} & K_{2} O_{2}$
3. C. $K_{2} Mn O_{4} & Mn O_{2}$
4. D. $Mn & K O_{2}$
Show answer
Answer: C
Q802024 · 29 Jan 2024 · Shift 1
In alkaline medium, $Mn O_{4}^{-}$ oxidises $I^{-}$ to
1. A. $I_{2}$
2. B. $I O_{3}^{-}$
3. C. $I O^{-}$
4. D. $I O_{4}^{-}$
Show answer
Answer: B
Q652024 · 29 Jan 2024 · Shift 2
1. A.Cyclohex-2-en-1-ol
2. B.1-Hydroxyhex-2-ene
3. C.Cyclohex-1-en-3-ol
4. D.Cyclohex-1-en-2-ol
Show answer
Answer: A
Q662024 · 29 Jan 2024 · Shift 2
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 | Choose the correct answer from the options given below:
1. A.A-II, B-IV, C-III, D-I
2. B.A-I, B-III, C-II, D-IV
3. C.A-II, B-III, C-I, D-IV
4. D.A-I, B-II, C-III, D-IV
Show answer
Answer: A
Q692024 · 29 Jan 2024 · Shift 2
1. A. $A < B < D < C$
2. B. $A < B < C < D$
3. C. $D < C < B < A$
4. D. $C < D < B < A$
Show answer
Answer: D
Q832024 · 29 Jan 2024 · Shift 2· Numerical answer
If $50 mL$ of $0.5 M$ oxalic acid is required to neutralise $25 mL$ of $NaOH$ solution, the amount of $NaOH$ in $50 mL$ of given $NaOH$ solution is _________ g.
Show answer
Answer: 4
Q622024 · 27 Jan 2024 · Shift 1
1. A.
2. B.
3. C.
4. D.
Show answer
Answer: B