Benzenediazonium chloride reacts with aniline to give a _____ coloured dye. 

The correct stability order of the following diazonium salt is

In the chemical reactions,



The compounds $\mathrm{A}$ and $\mathrm{B}$, respectively, are

Give reasons : Aromatic diazonium salts are more stable than aliphatic diazonium salts.

$\mathrm{A}$ and $\mathrm{B}$ in the following reactions are:

The final product $\mathrm{R}$ is