Methyl ethyl ketone is prepared by the oxidation of

Identify the product obtained in the following reaction:
$C_6H_6 \xrightarrow[\text{Anhydrous } AlCl_3, \text{high pressure}]{CO, HCl} \text{product}$

Identify $X$ and $Y$ in the reactions given below:

In the reaction $CH_3CN + CH_3MgI \to A \xrightarrow{H_2O/H^{+}} B$,the compound $B$ is

In the reaction sequence $CHCl_3$ $\xrightarrow{Air/hv} x$ $\xrightarrow[Excess]{C_6H_6 / Anhy. AlCl_3} y$,$y$ will be

$Benzaldehyde$ can be obtained from $benzal$ chloride. Write reactions for obtaining $benzal$ chloride and then $benzaldehyde$ from it.