Question

Consider the following compounds:
(i) $p-$ methyl aniline
(ii) $N, N-$ dimethylaniline
(iii) $N-$ ethyl aniline
(iv) $N-$ ethyl $ -N-$ methyl aniline
The compounds which do not form diazonium salt with ice-colds $NaNO _{2}$ and $HCl$ are:

• A. (i), (ii) and (iii)
• B. (ii), (iii) and (iv)
• C. (i), (iii) and (iv)
• D. (ii) and (iv)

Answer 1

Answer: (B)

Diazonium salt is formed only when the $-NH_{2} $ group is directly bonded to the benzene ring.



As a result, compounds (ii), (iii) and (iv) do not form diazonium salt.