1. Tardigrade
  2. Question
  3. Chemistry
  4. A positive carbylamine test is given by I. N, N-dimethylaniline II. 2, 4-dimethylaniline III. N-methyl-o-methylaniline IV. p-methylbenzyl amine

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Q. A positive carbylamine test is given by
I. $N$, $N$-dimethylaniline
II. $2$, $4$-dimethylaniline
III. $N$-methyl-$o$-methylaniline
IV. $p$-methylbenzyl amine

UPSEEUPSEE 2013Amines

Solution:

Carbylamine or isocyanide test is given by only primary amines, whether they are aliphatic or aromatic.

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I. II and III are aromatic but compound IV is an aliphatic amine. Further, compound 1 is tertiary amine, II and IV are primary amines, thus give positive carbylamine test, whereas compound III is a secondary amine.