$\mathrm{X}$ is a smallest optically active alkanol. On dehydration it can form $\mathrm{Y}$ number of alkenes (including stereoisomers). On reaction with Lucas reagent it forms $\mathrm{Z}$ number of alkyl halides (including stereoisomers). Report your answer as

The difference of molecular weights of the major products $\mathrm{P}$ and $\mathrm{Q}$ formed at the following reactions are:
(i)

(ii)

Which of the following statements regarding the projections shown below are true?

The structures represent:

The given compound $\left(\mathrm{X}\right)$ has:

The compounds $\mathrm{X}$ and $\mathrm{Y}$ in below reaction can be:

$\mathrm{Ph}-\mathrm{NH}-{\mathrm{NH}}_2 + \left(\mathrm{X}\right) + \left(\mathrm{Y}\right) \stackrel{-{\mathrm{H}}_2\mathrm{O}}{\to }\mathrm{P} + \mathrm{Q} ( \mathrm{Organic} \mathrm{products})$