Identify $P_3$ in the following reaction sequence:

Identify product '$B$' in the following series of reactions: $2-methylpropan-2-ol \xrightarrow{20\% H_2SO_4, 363 K} A \xrightarrow{H_2O, \Delta, Conc. H_2SO_4} B$

In the reaction sequence:
$\text{Ethanol}$ $\xrightarrow{PCl_5} X$ $\xrightarrow{\text{alc. } KOH} Y$ $\xrightarrow[H_2O, \Delta]{H_2SO_4, \text{room temp.}} Z$
The product $Z$ is:

In the esterification reaction of alcohols,which of the following occurs?

Which of the following compounds yields propanone upon dehydrogenation?

Match the reagents in Column-$I$ with the major products obtained from the reaction of $Butan-1-ol$ in Column-$II$.

Column-$I$ (Reagents)	Column-$II$ (Products)
$A$. $HCl + ZnCl_2$	$i$. $CH_3CH=CHCH_3$
$B$. $HBr$	$ii$. $CH_3CH_2CH_2CH_2Cl$
$C$. $SOCl_2$	$iii$. $CH_3CH_2CH_2CH_2Br$
$D$. $H_2SO_4, \Delta$	$iv$. $CH_3CH_2CH_2CH_2Cl$