Q.
PARAGRAPH "A"
An organic acid $P (C_{11}H_{12}O_{2})$ can easily be oxidized to a dibasic acid which reacts with ethyleneglycol 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 $S$.
Question: The compound $R$ is
Solution:
Correct answer is (a)
