The major product in the following reaction is

What is the major product of the following reaction?

The product of the reaction is:

The product $D$ of the reaction is:
$CH_3Cl$ $\xrightarrow{KCN} (A)$ $\xrightarrow{H_2O} (B)$ $\xrightarrow{NH_3} (C)$ $\xrightarrow{\Delta} (D)$

In Column - $I$ the structure of the compound is given,in Column - $II$ the boiling point,and in Column - $III$ the functional group is given. Find the correct match for Column - $I$ from Column - $II$ and Column - $III$.

Column - $I$ (Formula)	Column - $II$ (Boiling Point)	Column - $III$ (Group)
$(A)$ $CH_3COOH$	$(i)$ $309 \ K$	$(m)$ Alkane
$(B)$ $CH_3CH_2CH_2OH$	$(ii)$ $322 \ K$	$(n)$ Ketone
$(C)$ $CH_3COCH_3$	$(iii)$ $329 \ K$	$(o)$ Aldehyde
$(D)$ $CH_3CH_2CHO$	$(iv)$ $391 \ K$	$(p)$ Carboxylic acid
$(E)$ $CH_3CH_2CH_2CH_2CH_3$	$(v)$ $370 \ K$	$(q)$ Alcohol

An organic acid $P$ $(C_{11}H_{12}O_2)$ can easily be oxidized to a dibasic acid which reacts with ethylene glycol to produce a polymer,dacron. Upon ozonolysis,$P$ gives an aliphatic ketone as one of the products. $P$ undergoes the following reaction sequences to furnish $R$ via $Q$. The compound $P$ also undergoes another set of reactions to produce $S$.
$(1)$ The compound $R$ is
$(2)$ The compound $S$ is
Give the answer for questions $(1)$ and $(2)$.