Question Bank [2022] — Chemistry STD 12 Science — Question

Any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy in the animal body. Carbohydrates are polyhydroxy aldehydes or ketones or compounds which give rise to such units on hydrolysis.