JEE Main Chemistry question

A positive carbylamine test is given by

(A)-dimethylaniline
(B)2,4-DimethylanilineCorrect
(C)-methyl--methylaniline
(D)-methylbenzylamine

Answer: (B)

Solution

The carbylamine (isocyanide) test is given only by PRIMARY amines (both aliphatic and aromatic), since it requires the two N–H hydrogens of a group. -dimethylaniline is tertiary (no N–H); -methyl--methylaniline and -methylbenzylamine are both

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Question ID VK-150390