Question

What are carbohydrates ?

Answer 1

Carbohydrates are the sugars , starches and the fibres which are present in fruits , vegetables,grains and milk products . They are a rich source of nutrients to our body . They provide is with energy . So , they are known as - " Energy providers'.

Answer 2

any of a class of organic compounds that are polyhydroxy aldehydes or polyhydroxy ketones, or change to such substances on simple chemical transformations, as hydrolysis, oxidation, or reduction, and that form the supporting tissues of plants and are important food for animals and people. That's the  official definition for what you are asking.