Which of the following alcohols is $NOT$ prepared by acid catalyzed hydration of alkenes?

Explain the method of obtaining alcohols from carboxylic acids and esters.

Which of the following reactions yields propan$-2-$ol?

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

What are $X$ and $Y$ in the following reactions?
$CH_2O \xrightarrow[(ii) H_3O^+]{(i) X} CH_3(CH_2)_2CH_2OH$
$Y \xrightarrow[(ii) H_3O^+]{(i) C_2H_5MgBr} CH_3CH_2C(CH_3)_2OH$

$RMgX \xrightarrow{HCHO} CH_3-CH(CH_3)-CH_2-OH$. Find out $R$ in this reaction.