The product $(A)$ in the following reaction is: $Cl-CO-C_6H_4-Cl + C_6H_6 \xrightarrow{AlCl_3} A$

An acyl chloride is hydrogenated over a catalyst of palladium on barium sulphate to form an aldehyde. This reaction is called:

Benzonitrile on reduction with stannous chloride $(SnCl_2)$ in the presence of hydrochloric acid $(HCl)$ followed by acid hydrolysis forms,

Consider the following reaction:
$C_6H_5COCl \xrightarrow{H_2, Pd/BaSO_4} A$
The product $A$ is:

What is the product formed by the reaction of chromyl chloride and toluene?

$L$ $\xrightarrow[(ii) H_3O^{\oplus}]{(i) PhMgBr} M$ $\xrightarrow{CrO_3 / H^{\oplus}} N$ $\xrightarrow{Ph_3P=CH_2} Ph_2C=CH_2$
$L$ in the above sequence of reaction is/are (where $L \neq M \neq N$)