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Which of the following compounds is a primary aliphatic amine? (a) N,N-dimethylformamide (b) Pyridine (c) 2-Butylamine (d) Aniline

easy MCQ 1 mark Class 12 · Chemistry · Amines
  1. N,N-dimethylformamide
  2. Pyridine
  3. 2-Butylamine
  4. Aniline
Answer
2-Butylamine

The correct answer is 2-Butylamine — Option (d) Aniline is a primary aromatic amine, but the question asks for aliphatic amine, so it is not correct.

Step-by-step solution

  1. Identify the functional group that contains a terminal –NH₂ attached directly to a saturated carbon chain.
  2. Check option (c) 2-Butylamine: –CH₂CH₂CH₂CH₂NH₂, which is a primary aliphatic amine.
  3. Option (a) N,N-dimethylformamide has a tertiary amide, not a primary amine.
  4. Option (b) Pyridine is a heterocyclic aromatic nitrogen, not primary.
  5. Option (d) Aniline is a primary aromatic amine, but the question asks for aliphatic amine, so it is not correct.
Common mistake: Confusing aromatic amines with aliphatic primary amines

Concept tested: Primary aliphatic amines

Published · How this solution was prepared and checked

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