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Amines

JEE Main 2026 (Online) 6th April Morning ShiftMCQEasy📈 Topic in 3% papers+4−1
Ques. 1JEE Main 2026, 6 April (Morning Shift)

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

Answer

(3) C < D < B < A

Solution

Molar masses are close (74, 73, 58, 73 g mol-1), so boiling point is decided by intermolecular hydrogen bonding.

n- C4H10 (C): non-polar, only weak van der Waals forces ⇒ lowest

C2H5NHC2H5 (D): 2° amine, one N–H per molecule ⇒ weak H-bonding

n-C4H9NH2 (B): 1° amine, two N–H per molecule ⇒ more extensive H-bonding

n-C4H9OH (A): O is more electronegative than N ⇒ O–H···O bonds are stronger than N–H···N ⇒ highest

∴ C < D < B < A

Answer: (3)

Keep practising — Amines

Ques. 2JEE Main 2026, 6 April (Morning Shift)

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)

Ques. 3JEE Main 2026, 6 April (Evening Shift)

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
Ques. 4JEE Main 2026, 6 April (Evening Shift)

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
Ques. 5JEE Main 2026, 5 April (Morning Shift)

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
Ques. 6JEE Main 2026, 5 April (Morning Shift)

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
Ques. 7JEE Main 2026, 5 April (Evening Shift)

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
Ques. 8JEE Main 2026, 4 April (Morning Shift)

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
Ques. 9JEE Main 2026, 2 April (Morning Shift)

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"
Ques. 10JEE Main 2026, 2 April (Morning Shift)

Consider the three aromatic molecules (P, Q and R) whose structures have been given below : [figure] The correct order regarding the reactivity of these compounds with Ph- N N Cl under optimum but slightly acidic medium is :

  1. P > Q > R
  2. R > P > Q
  3. R > Q > P
  4. P > R > Q
Ques. 11JEE Main 2026, 2 April (Evening Shift)

Identify compounds A and E in the following reaction sequence. [figure]

  1. A = [figure] E = [figure]
  2. A = [figure] E = [figure]
  3. A = [figure] E = [figure]
  4. A = [figure] E = [figure]

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