What is the final product when benzoic acid is treated with thionyl chloride, then ammonia, followed by reaction with sodium hypobromite and finally with bromine?

Starting from propanoic acid, the following reactions were carried out 
Propanoic acid $\stackrel{{\mathrm{SOCl}}_2}{⟶}\mathrm{X}\stackrel{{\mathrm{NH}}_3}{⟶}\mathrm{Y}⟶{\mathrm{Z}}_2+\mathrm{KOH}\to \mathrm{Z}$

What is the compound $\mathrm{Z}$?

Identify $\text{'}\mathrm{A}\text{'}$ in the following reaction $\mathrm{R}-{\mathrm{NO}}_2\underset{\mathrm{neutral} \mathrm{medium} }{\overset{\mathrm{Zn}/{\mathrm{NH}}_4\mathrm{Cl}}{\to }}\mathrm{A}+{\mathrm{H}}_2\mathrm{O}$

In the reaction, 

${\mathrm{CH}}_3·{\mathrm{CH}}_2·\mathrm{Cl}\stackrel{\mathrm{KCN}}{⟶}\left(\mathrm{A}\right)\stackrel{{\mathrm{LiAlH}}_4}{⟶}\left(\mathrm{P}\right)$ end product $\left(\mathrm{P}\right)$ is

What are $\mathrm{P}$ and $\mathrm{Q}$ in the following reactions?