Ethanoic acid $+$ $3$-methylbutan-$1$-ol $\underset{\text{traces } H_2SO_4}{\longleftrightarrow} (A)$; Compound $(A)$ is

Select the $CORRECT$ increasing order of boiling points of alcohols,amines,and carboxylic acids of comparable molar mass from the following.

In the following reactions,what are $B$ and $X$ respectively?
$C_2H_5MgBr$ $\xrightarrow{ClCN} C_2H_5CN$ $\xrightarrow{H_3O^+} B$
$CH_3COCH_3$ $\xrightarrow[NaOH]{I_2} X + CHI_3$ $\xrightarrow{Ag} Y$
$C_6H_5NH_2$ $\xrightarrow[HCl]{NaNO_2} P$ $\xrightarrow{CuCN} Q$ $\xrightarrow{+4H} R$

Match the formulas in Column-$I$ with their names in Column-$II$.

Column-$I$ (formula)	Column-$II$ (name)
$A$. $RCH=NH$	$i$. Diisobutyl aluminium hydride
$B$. $AlH(i-Bu)_2$	$ii$. Benzalchloride
$C$. $C_6H_5-CH(OCOCH_3)_2$	$iii$. Imine
$D$. $C_6H_5CHCl_2$	$iv$. Benzylidene diacetate

The correct acidity order of the following compounds is:

The products $A$ and $B$ in the following reaction sequence are: