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 NaNO₂ and HCl are:

Options

• (i), (ii) and (iii)

• (ii), (iii) and (iv)

• (i), (iii) and (iv)

• (ii) and (iv)

Answer 1

(ii), (iii) and (iv)

Explanation:

Diazonium salt is formed only when the –NH₂ group is directly bonded to the benzene ring.

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