The product formed when glycerol reacts with $PCl_5$ is -

$Ph-CH=CH-CH_3$ $\xrightarrow[H_2O_2/OH^-]{B_2H_6/THF}$ Products. Reaction $(A)$
$CH_3-CH=CH-Ph$ $\xrightarrow[NaBH_4]{Hg(OAc)_2/H_2O}$ Products. Reaction $(B)$
Which statement is correct?

Which among the following compounds has the highest melting point?

Which of the following isomers of $C_4H_9OH$ has the lowest boiling point?

Which of the following is correctly matched?

Identify $Z$ in the following reaction sequence:
$(CH_3)_2CH-OH$ $\xrightarrow{PBr_3} X$ $\xrightarrow{alc. KOH} Y$ $\xrightarrow[(ii) H_3O^+]{(i) H_2SO_4} Z$