$2-\text{Phenylethanol}$ can be prepared by the reaction of phenylmagnesium bromide with which of the following?

Which of the following reagents is $NOT$ useful for the preparation of alkyl chloride from alcohol?

An alcohol,$X$ $(C_5H_{12}O)$ in the presence of $Cu / 573 \ K$ gives $Y$ $(C_5H_{10})$. The reactants required for the preparation of $X$ are

Propan$-1-$ol can be prepared from propene by

In the following sequence of reactions,the compound $D$ is
$CH_3CH_2OH$ $\xrightarrow{P + I_2} A$ $\xrightarrow[{ether}]{Mg} B$ $\xrightarrow{HCHO} C$ $\xrightarrow{H_2O} D$

Which of the following is an incorrect method for the preparation of alcohols?