Question

$2$-Chlorobutane $\underset{\Delta }{\overset{\text{ Alc. KoH }}{\to }}\underset{\text{(Major)}}{X}\underset{ii.Zn/H_{2}O}{\overset{i.O_3}{\to }}Y$
Methyl formate $+$ Ethyl magnesium bromide $\underset{ii.H^{+},H_{2}O}{\overset{i.\text{Dry ether}}{\to }}$
Product ' $Y$ ' and ' $P$ ' differ in molecular mass by____. $u$

Answer 1

Answer: 14

Acetaldehyde $(Y)$ and propionaldehyde $(P)$ are homologues of each other. They differ by one $-C{H}_2$ unit.
Hence, they differ in molecular mass by $14u$.