The compound $X$ in the following reaction scheme is:

Write structures of different isomers corresponding to the molecular formula $C_{3}H_{9}N$. Write $IUPAC$ names of the isomers which will liberate nitrogen gas on treatment with nitrous acid.

Given below are two statements:
Statement $I$ : The $NH_2$ group in Aniline is ortho and para directing and a powerful activating group.
Statement $II$ : Aniline does not undergo Friedel-Craft's reaction (alkylation and acylation).
In the light of the above statements,choose the most appropriate answer from the options given below :

Identify $A$ and $B$ in the following reactions:

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

Total number of secondary amines (excluding stereoisomers) possible with the molecular formula $C_5H_{13}N$ is