Complete the following reactions:

(i)

When benzoic acid is treated with ammonia it undergoes neutralisation to give ammonium benzoate as salt, which on treatment with heat gives benzamide.

When further treatment with bromine dissolved in KOH forms intermediate of KOBr which attacks the carbonyl centre and undergoes Hofmann rearrangement to give aniline as the product along with potassium carbonate.

(ii)

When nitro-benzene is treated with HCl in presence of Fe, it undergoes catalytic reduction and the reduction takes place through formation of nitroso and hydroxylamine intermediates.

Aniline on treatment with NaNO₂ at 273 K forms diazonium salt which facilitates the nucleophilic substitution of nitrile ion from cupper cyanide (CuCN) which gives benzonitrile as the end product.