Aniline on heating with fumig sulphuric acid gives.

Aniline on heating with fuming sulphuric acid gives

Aniline with fuming sulphuric acid gives :

Benzene reacts with fuming sulphuric acid to give

PCl_5 on treatment with sulphuric acid gives

When aniline is treated with fuming sulphuric acid at 475 K, it gives

When aniline is treated with fuming sulphuric acid at 475 K, it gives

A ketone (A) which undergoes reduction to give (B). (B) on heating with sulphuric acid gives mixture of 1-butene and 2-butene . Identify(A) and (B). On heating with sulphuric acid gives mixture of 1-butene and -butene . Identify (A) and (B).

N-methyl aniline on reaction with nitrous acid gives