What is the final product of the reaction sequence: $C_2H_5NH_2$ $\xrightarrow{HNO_2} A$ $\xrightarrow{PCl_5} B$ $\xrightarrow{NH_3} C$?

Predict the reagents or products $(1)$ to $(5)$ in the following reaction sequence:
$p-Nitrotoluene$ $\xrightarrow{(1)} p-Toluidine$ $\xrightarrow{(CH_3CO)_2O/\text{Pyridine}} p-Acetotoluidide$ $\xrightarrow{HNO_3/H_2SO_4} (2)$ $\xrightarrow{(3)} (4)$ $\xrightarrow{(5)} 3-Nitrotoluene$

When aniline is nitrated with nitrating mixture in ice-cold condition, the major product obtained is

By reduction of nitrosobenzene,which of the following is not obtained?

Which amine will not react with nitrous acid $(HNO_2)$?

Correct sequence of reagents for the conversion shown in the image is $-$