Acetone can be converted into pinacol by:

$CH_3-CO-OC_2H_5 \xrightarrow{H_2N-NH_2} X$; $CH_3-CO-C_2H_5 \xrightarrow{H_2N-NH_2} Y$. $X$ and $Y$ are:

The product of the given reaction is:

Which of the following reagents can be used to reduce the $ > C = O$ group to $CH_2$?

The product $(Q)$ will be:

Propyne was subjected to a reaction with $HgSO_4/dil. H_2SO_4$,which resulted in a product $P$. The product $P$ was heated with $Ba(OH)_2$ to give the product $Q$. The molecular formula of the product $Q$ is