Home Chemistry General Organic Chemistry JEE ADVANCED Previous Year Question The correct order of increasing basic nature…
Chemistry General Organic Chemistry JEE ADVANCED Previous Year Question Single Correct MCQ
Published on: August 13, 2026

The correct order of increasing basic nature for the bases NH 3 , CH 3 NH 2 and (CH 3 ) 2 NH is:

A
CH 3 NH 2 < NH 3 < (CH 3 ) 2 NH
B
(CH 3 ) 2 NH < NH 3 < CH 3 NH 2
C
NH 3 < CH 3 NH 2 < (CH 3 ) 2 NH
D
CH 3 NH 2 < (CH 3 ) 2 NH < NH 3

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Text Solution

Verified by Experts
The correct answer is:
C

Except the amines containing tertiary butyl group, all lower aliphatic amines are stronger bases than ammonia because of + I (inductive). The alkyl groups, which are electron releasing groups, increase the electron density around the nitrogen there by increasing the availability of the lone pair of electrons to proton or lewis acids and making the amine more basic.

Thus the relative strength is in order (CH 3 ) 2 NH > CH 3 NH 2 > NH 3 .

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