Question

The two functional groups present in a typical carbohydrate are
(a) –OH and –COOH (b) –CHO and –COOH
(c) ⟩C = O and –OH (d) –OH and –CHO

Answer 1

(c) : Carbohydrates are essentially polyhydroxy aldehydes and polyhydroxy ketones. Thus the two functional groups present are  (aldehyde or ketone) and –OH.