Question

Esters are functional group isomers of:

• A. Hydroxy aldehydes
• B. ketones
• C. Diketones
• D. Alkanoic acid

Answer 1

Answer: (A), (D)

The correct options are
A Hydroxy aldehydes
D Alkanoic acid

Esters are functional group isomers of

(a) Hydroxy aldehydes

(d)Alkanoic acid

For example, ethyl acetate $C{H}_{3}COOC{H}_{2}C{H}_3$ is an ester. It is functional group isomer of

(a) 4-hydroxy butanal (Hydroxy aldehyde) $HO-C{H}_{2}C{H}_{2}C{H}_{2}CHO$
(d) Butanoic acid $C{H}_{3}C{H}_{2}C{H}_{2}COOH$