The two functional groups characteristic of sugars are

Options

(a) Carbonyl and hydroxyl
(b) Carbonyl and phosphate
(c) Carbonyl and methyl
(d) Hydroxyl and methyl

Correct Answer:

Carbonyl and hydroxyl

Explanation:

Sugar is a common term used to denote carbohydrate.Carbohydrates are polyhydroxy aldehyde, ketone or their derivatives, which means they have carbonyl and hydroxyl groups.