In the given esterification reaction,the labelled $^{18}O$ will be found in:

Diols $(I-IV)$ which react with $CrO_3$ in aqueous $H_2SO_4$ and yield products that readily undergo decarboxylation on heating,are

Match the reactants in Column-$I$ with the products formed in Column-$II$.

Column-$I$ (Reactants)	Column-$II$ (Products)
$A$. Cumene $+ O_2$	$i$. Phenol
$B$. Benzene sulphonic acid $\xrightarrow{NaOH, H^+}$	$ii$. $2$-Methylbutan-$1$-ol
$C$. Chlorobenzene $+ NaOH \xrightarrow{623 \ K, 300 \ atm}$	$iii$. Cumene hydroperoxide
$D$. $2$-Methylbutanal $\xrightarrow{NaBH_4}$	$iv$. Sodium phenoxide

$A$ mixture of $1 \ g$ each of chlorobenzene,aniline,and benzoic acid is dissolved in $50 \ mL$ of ethyl acetate and placed in a separating funnel. $5 \ M \ NaOH$ $(30 \ mL)$ was added to the same funnel. The funnel was shaken vigorously and then kept aside. The ethyl acetate layer in the funnel contains:

Esterification of the acid $P$ with the alcohol $Q$ will give:

Select the correct statement.