What is the physical state of pure aniline?

Assertion : Nitration of aniline can be conveniently done by protecting the amino group by acetylation.
Reason : Acetylation increases the electron density in the benzene ring.

The compound which gives an oily nitrosoamine on reaction with nitrous acid at low temperature is:

Identify the reagents $A, B, C$ respectively in the following reaction sequence:

Reduction of nitrobenzene with $Zn$ and alcoholic $KOH$ solution results in the formation of the following compound:

Consider the following reaction sequence and identify the correct option: