The boiling point of glycerol is higher than that of propanal because of:

Identify $Z$ in the following sequence of reactions:
$CH_{3}-CH_{2}-CH_{2}-OH$ $\xrightarrow{PCl_{3}} X$ $\xrightarrow[\Delta]{alco.KOH} Y$ $\xrightarrow[H-OH/heat]{conc.H_{2}SO_{4}} Z$

Give the structures of the products you would expect when each of the following alcohols reacts with $(a)$ $HCl - ZnCl_{2}$,$(b)$ $HBr$,and $(c)$ $SOCl_{2}$: $(i)$ $Butan-1-ol$,$(ii)$ $2-Methylbutan-2-ol$.

Which of the following has the maximum boiling point?

Which compound will give a yellow precipitate on reaction with sodium hypoiodite?

In which of the following $S_N1$ reactions will a racemic mixture form as the major product?