How is nitroethane converted into-ethylamine, N-ethyl hydroxylamine and acetic acid?

Write structural formula of the compounds $\mathrm{A}$ to $\mathrm{D}$.

${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NO}}_2\underset{\mathrm{conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{\mathrm{conc}. {\mathrm{HNO}}_3}{\to }}\mathrm{A}\stackrel{\mathrm{NaSH}}{\to }\mathrm{B}\underset{50\% \mathrm{Ethanol},∆}{\overset{\mathrm{Zn}+{\mathrm{NH}}_4\mathrm{Cl}}{\to }}\mathrm{C}\stackrel{\mathrm{Tollen}\text{'}\mathrm{s} \mathrm{reagent}}{\to }\mathrm{D}$

In the reaction given below, $\mathrm{X}$ is

Supply the structures to the bracketed compounds $\left[A\right]$ to $\left[L\right].$

Hydrazobenzene is formed when nitrobenzene is reduced with:

Azoxybenzene can be obtained by the treatment of nitrobenzene with

Predict the major product of the following reaction.

Give steps involved in the following conversions:

Nitrobenzene into $\mathrm{sym}-$tribromobenzene.

Azoxybenzene can be obtained by the treatment of nitrobenzene with:

Supply the structures to the bracketed compounds $\left[\mathrm{A}\right]$ to $\left[\mathrm{L}\right]$

(c)   

A nitrogenous substance (X) is treated with ${\mathrm{HNO}}_2$ and the product so formed is further treated with $\mathrm{NaOH}$ solution, which produces blue colouration. Which of the following can (X) be?