Identify $A$ and $B$ in the following reaction:

The major product of the following reaction is:

Order of hydrolysis for the following:
$I$. $RCOCl$
$II$. $RCOOR$
$III$. $RCONH_2$
$IV$. $(RCO)_2O$

In the following sequence of reaction,$CH_3Br$ $\xrightarrow{KCN} (A)$ $\xrightarrow{H_3O^{+}} (B)$ $\xrightarrow{LiAlH_4, \text{ ether}} (C)$. The end product $(C)$ is

Given below are two statements :
Statement $I :$ The esterification of carboxylic acid with an alcohol is a nucleophilic acyl substitution.
Statement $II :$ Electron withdrawing groups in the carboxylic acid will increase the rate of esterification reaction.
Choose the most appropriate option

Identify $Z$ in the following reaction:
$1,2-bis(hydroxymethyl)benzene$ $\xrightarrow[\text{Vigorous Oxidation}]{} X$ $\xrightarrow[\text{Dry Heating}]{} Z$