The product formed from the following reaction sequence is:

Given below are two statements:
Statement $I$: Aniline does not undergo Friedel-Crafts alkylation reaction.
Statement $II$: Aniline cannot be prepared through Gabriel synthesis.
In the light of the above statements,choose the correct answer from the options given below:

In the below given synthetic sequence,the product "$C$" is

What is the major product obtained from the following reaction?

Which gas will be evolved out when $[CH_3CH_2NH_2 + (CH_3)_2CHNH_2]$ is treated with sodium nitrite and $HCl$?

In the following reactions,the major product $W$ is