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Amines · Question 40

JEE Main 2025 (Online) 28th January Evening ShiftMCQEasy📈 Topic in 42% papers+4−1
1

Identify correct statements : Choose the correct answer from the options given below :

  1. (B) and (C) only
  2. (D) and (E) only
  3. (A) and (B) only
  4. (B) and (D) only

Answer

(4) (B) and (D) only

Solution

(A) Primary amines react with NaNO2/HCl (nitrous acid) to form diazonium salts (stable for aromatic amines at 273–278 K, unstable for aliphatic ones) incorrect.

(B) R-NH2 + CHCl3 + 3KOH R-NC + 3KCl + 3H2O; both aliphatic and aromatic 1° amines form foul-smelling isocyanides (carbylamines) correct.

(C) The carbylamine test is given only by primary amines incorrect.

(D) Benzenesulphonyl chloride (C6H5SO2Cl) is Hinsberg's reagent correct.

(E) Tertiary amines have no H on nitrogen, so they do not react with benzenesulphonyl chloride incorrect.

Correct: (B) and (D).

Answer: (4)

JEE Main 2025 (Online) 28th January Evening Shift

Keep practising — Amines

2

Which statements are True? Choose the correct answer from the options given below :

  1. A, C and E only
  2. B, C and D only
  3. C and E only
  4. C, D and E only
JEE Main 2026 (Online) 8th April Evening Shift
3

Arrange the following compounds according to increasing order of boiling points. n-C4H9OH (A), n-C4H9NH2 (B), n- C4H10 (C) and C2H5NHC2H5 (D).

  1. C < B < A < D
  2. D < C < B < A
  3. C < D < B < A
  4. D < B < A < C
JEE Main 2026 (Online) 6th April Morning Shift
4

Consider the following sequence of reactions. [figure] The percentage of nitrogen in the yellow product (X) formed is %. (Nearest Integer) (Given Molar mass in g mol-1 H : 1, C : 12, N : 14)

JEE Main 2026 (Online) 6th April Morning Shift
5

Consider the following organic reaction sequence. Choose the final product (X) from the following (consider the major product in all intermediate reactions) [figure]

  1. Benzene
  2. Phenol
  3. Propanol
  4. Chlorobenzene
JEE Main 2026 (Online) 6th April Evening Shift
6

The number of compounds from the following which can undergo reaction with Br2/KOH (alcoholic) to give respective products and these respective products can also be obtained separately by Gabriel phthalimide reaction is : [figure]

  1. 5
  2. 4
  3. 3
  4. 6
JEE Main 2026 (Online) 6th April Evening Shift
7

Benzyl isocyanide can be obtained from Choose the correct answer from the options given below :

  1. A and B Only
  2. A and C Only
  3. B and D Only
  4. D and E Only
JEE Main 2026 (Online) 5th April Morning Shift
8

Identify the incorrect statements. Choose the correct answer from the options given below:

  1. A and D Only
  2. A and C Only
  3. B and C Only
  4. A and B Only
JEE Main 2026 (Online) 5th April Morning Shift
9

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
JEE Main 2026 (Online) 5th April Evening Shift
10

Product C of the following reaction sequence will be [figure]

  1. 1-Bromo-4-nitrobenzene
  2. 1, 3, 5-Tribromo-2-nitrobenzene
  3. 4-Bromo-1-nitrobenzene
  4. 1, 3, 5-Tribromobenzene
JEE Main 2026 (Online) 4th April Morning Shift
11

For the given molecule, "x", the preferred site for the attack of the electrophile is : [figure]

  1. Predominantly at "r"
  2. "r" and "u"
  3. "p" and "s"
  4. Predominantly at "u"
JEE Main 2026 (Online) 2nd April Morning Shift

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