Which of the following is $NOT$ prepared by the action of Grignard's reagent on methanal?

Which of the following compounds will form a $2^o$ alcohol when treated with a $\text{Grignard reagent}$ followed by hydrolysis?

Primary alcohol is mainly formed in which of the following reactions?

The product in the following reaction is: $CH_3MgI + HCHO \to \text{Product}$

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 reactions yields propan$-2-$ol?