$X$ & $Y$ respectively are $-$

In the reaction,$C_6H_5CN$ $\xrightarrow[(ii) H_3O^+]{(i) SnCl_2 + HCl} X$ $\xrightarrow{conc. KOH} Y + Z$,the formation of $X, Y$ and $Z$ are known by:

$CH_3COCH_3$ can be obtained by

The product $(B)$ of the following reaction is:

Which of the following compounds is obtained when toluene is treated with $CrO_2Cl_2$ in the presence of $CS_2$ followed by acid hydrolysis?

The chemicals used for preparing acetophenone are:
$(A)$ $C_6H_6$
$(B)$ $CH_3COCH_3$
$(C)$ $CH_3COCl$
$(D)$ Anhydrous $AlCl_3$