$C_6H_6 + CO + HCl \xrightarrow{\text{Anhy. } AlCl_3} X + HCl$. Compound $X$ is

Benzaldehyde can be formed by :-

For the reaction below,the structure of the product $Q$ is:

Propanenitrile on reaction with ethylmagnesium iodide in the presence of dry ether gives an imine complex. This imine complex on acid hydrolysis forms:

In column - $I$ reaction name,in column - $II$ reactant and in column - $III$ product are given,match column - $I$ with column - $II$ and column - $III$ with the correct option.

Column - $I$ and $II$	Column - $III$
$(A).$ Rosenmund reaction - $(i).$ $H_2, Pd, BaSO_4$	$(p).$ Benzene to benzaldehyde
$(B).$ Stephen reaction - $(iii).$ $SnCl_2, HCl$	$(q).$ Benzoyl chloride to benzaldehyde
$(C).$ Etard reaction - $(iv).$ $CrO_2Cl_2, CS_2$	$(r).$ Toluene to chromium complex
$(D).$ Gatterman-Koch reaction - $(ii).$ $CO, HCl$ anhydrous $AlCl_3/CuCl$	$(s).$ $RCN \to RCHO$

Describe different methods for the preparation of ketones with suitable chemical reactions.