Question

Which of the following amines does not give carbylamine reaction?

• A. \( CH_3NH_2 \)
• B. \( CH_3CH_2NH_2 \)
• C. \( CH_3NHCH_3 \)
• D. \( C_6H_5NH_2 \)

Hint:

The carbylamine reaction is used to detect primary amines, where they react with chloroform and alcoholic KOH to form isocyanides with a foul odor.

Answer 1

The Correct Option is C

Step 1: The carbylamine test is given by primary amines (both aliphatic and aromatic), but not by secondary or tertiary amines. Step 2: \( CH_3NHCH_3 \) is a secondary amine, which does not give the carbylamine reaction. All other options contain primary amines and will give a positive test.