Question

The diazonium salt of which of the following compounds will form a coloured dye on reaction with $\beta$ - Naphthol in NaOH ?

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

Only primary aromatic amines form stable diazonium salt.
Benzene diazonium salt from aniline reaction with naphthol in NaOH to form azo compound (Orange colour dye) as shown below:

Hence, option (c) is correct.