The most probable structure for $\left(\mathrm{P}\right)$ in the following reaction is:

Which one of the following alkenes will react faster with ${\mathrm{H}}_2$ under catalytic hydrogenation conditions?

($\mathrm{R}=$ Alkyl substituent)

Arrange the following in order of increase/decrease in boiling point.

$\begin{array}{c}{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3\\ \mathrm{I}\end{array}$  $\begin{array}{c}{\left({\mathrm{CH}}_3\right)}_2{\mathrm{CHCH}}_2{\mathrm{CH}}_3\\ \mathrm{II}\end{array}$ $\begin{array}{c}{\left({\mathrm{CH}}_3\right)}_4\mathrm{C}\\ \mathrm{III}\end{array}$