How can the following conversions be carried out:
(i) Aniline to bromobenzene
(ii) Chlorobenzene to 2-chloroacetophenone
(iii) Chloroethane to butane

Explanation

(i) Aniline to bromobenzene :

(ii) Chlorobenzene to 2-chloroacetophenone :

(iii) Chloroethane to butane :
`CH_(3)-CH_(3)-Cloverset(2Na//dry Ethr)underset("wurtz reaction ")rarrCH_(3)-CH_(2)-CH_(2)-CH_(3)+2NaCl`