$X$ and $Y$ (major products) in the following reaction sequence are:

$Benzamide$ $\xrightarrow{Br_2 / NaOH} X$ $\xrightarrow[\text{alc. } KOH]{CHCl_3} Y$
The conversion of $X$ to $Y$ is

What is the product formed when an aliphatic primary amine reacts with $HNO_2$?

Identify the final product $Z$ in the following reaction sequence:

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:

In the reaction sequence $A$ $\xrightarrow{Sn/HCl} B$ $\xrightarrow{HNO_2, 0^{\circ}C} C$ $\xrightarrow{C_2H_5OH} C_6H_6$,identify the functional groups present in $A, B,$ and $C$.