JEE · NEET Previous Year Question

Arrange the following in increasing order of their boiling points
N-Ethylethanamine Butanamine N, N-dimethyl ethanamine
I II III

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

  1. AIII II I
  2. BIII I II
  3. CII III I
  4. DII I III

Correct answer: D

Solution

(d) The boiling point of amines increases with increasing molecular mass and with decreasing number of alkyl groups to the amino -atom because of -bonding.

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