The colour of $p$-amino azobenzene is

The most basic compound among the following is:

Compound $A$ is converted to $B$ on reaction with $CHCl_3$ and $KOH$. The compound $B$ is toxic and can be decomposed by $C$. $A, B$ and $C$ respectively are:

The reaction of Benzenediazonium chloride with aniline yields a yellow dye. The name of the yellow dye is

Which of the following amines does not evolve $N_2$ gas upon reaction with $HNO_2$?

Which of the options correctly represents the basicity order for these compounds?