Ethyl alcohol on treating with thionyl chloride, gives off which gas?

The reaction of ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CH} = {\mathrm{CHCH}}_3$ with $\mathrm{HBr}$ produces ______.

Assertion (A): ${\mathrm{CHCl}}_3$ is stored in closed, dark-colored bottles completely filled, so that air is kept out.

Reason (R): $1°$ amines on reaction with ethanolic $\mathrm{KOH}$ and ${\mathrm{CHCl}}_3$ gives carbylamine.

What is the common name of the given compound?