The product of the reaction is:

Given below are two statements:
Statement $I$: Pure Aniline and other arylamines are usually colourless.
Statement $II$: Arylamines get coloured on storage due to atmospheric reduction.
In the light of the above statements,choose the most appropriate answer from the options given below:

The compound $A$ with the following sequence of reactions gives benzoic acid.
$A$ $\xrightarrow{NaNO_2/HCl} B$ $\xrightarrow{KCN} C$ $\xrightarrow{H_3O^{+}} \text{benzoic acid}$
The compound $A$ is:

Primary nitro compounds react with $HNO_2$ to form crystalline solids which,on treatment with $NaOH$,give:

Identify the different types of bonds present in quaternary ammonium salts.

In the diazotisation of aniline with sodium nitrite and hydrochloric acid,an excess of hydrochloric acid is used primarily to