Boiling water reacts with $C_6H_5N_2^+Cl^-$ to give:

Isopropylbenzene on air oxidation in the presence of dilute acid gives

Hydrolysis of which compound will give carbolic acid?

Identify $A$,$B$,and $C$,respectively,in the following reaction sequence:

Sodium benzene sulphonate reacts with $NaOH$ and then on acidic hydrolysis,it gives

Identify product $C$ in the following reaction sequence:
Nitrobenzene $\xrightarrow{Sn+HCl} A$ $\xrightarrow{HNO_2, 0^{\circ}C-5^{\circ}C} B$ $\xrightarrow{H_2O, \Delta} C$