Nitrogen Compounds Questions

What is the product obtained in the following reaction: $\text{Nitrobenzene}\stackrel{{\text{Zn/NH}}_4\text{Cl}}{\to }\dots$?

Among the following which one does not act as an intermediate in Hofmann rearrangement?

An organic compound (${\text{C}}_3{\text{H}}_9\text{N}$) ($A$), when treated with nitrous acid, gave an alcohol and ${\text{N}}_2$ gas was evolved. ($A$) on warming with ${\text{CHCl}}_3$ and caustic potash gave ($C$) which on reduction gave isopropylmethylamine. Predict the structure ($A$).

A given nitrogen-containing aromatic compound $\text{A}$ reacts with $\text{Sn/HCl}$, followed by ${\text{HNO}}_2$ to give an unstable compound $\text{B}$. $\text{B}$, on treatment with phenol, forms a beautiful coloured compound $\text{C}$ with the molecular formula ${\text{C}}_{12}{\text{H}}_{10}{\text{N}}_2\text{O}$. The structure of compound $\text{A}$ is: