Level 3

$\stackrel{\mathrm{\Delta }}{⟶}\left(\mathrm{A}\right)\stackrel{{\mathrm{NH}}_3}{⟶}\left(\mathrm{B}\right)\underset{{\mathrm{H}}_2\mathrm{O}}{\overset{\mathrm{NaOH}}{\to }}\left(\mathrm{C}\right)\stackrel{{\mathrm{Br}}_2+\mathrm{KOH}}{⟶}\left(\mathrm{D}\right)\stackrel{\mathrm{HCl}}{⟶}\left(\mathrm{E}\right)$ In this reaction the product $\left(\mathrm{E}\right)$ is:

Which of the following reactions does not yield an amine?

The major product of the reaction is

Consider the following ions:

The reactivities of these ions in azo-coupling reactions (under similar conditions) will be:

Primary nitro compounds react with nitrous acid to form nitrolic acids which dissolve in $\mathrm{NaOH}$ resulting in a 

The indicator that is obtained by coupling the diazonium salt of sulphanilic acid with $\mathrm{N},\mathrm{N}$ -dimethylaniline is:

${\mathrm{C}}_6{\mathrm{H}}_5-{\mathrm{NO}}_2\underset{{\mathrm{NH}}_4\mathrm{Cl}}{\overset{\mathrm{Zn} \mathrm{dust}}{\to }}\mathrm{A} \underset{\mathrm{conc}. \mathrm{HCl}}{\overset{\mathrm{cold}}{\to }}\mathrm{B}$ 

$\mathrm{A}$ and $\mathrm{B}$ respectively are:

A compound $\mathrm{A}$ has the molecular formula ${\mathrm{C}}_7{\mathrm{H}}_7\mathrm{NO}.$ On treatment with ${\mathrm{Br}}_2$ and $\mathrm{KOH}$, $\mathrm{A}$ gives an amine $\mathrm{B}$, which gives the carbylamine test. $\mathrm{B}$ upon diazotisation and coupling with phenol gives an azo dye. $\mathrm{A}$ can be