Question

Organic substances are not soluble in water but why the sugar soluble in water

Answer 1

Sugar has lot of - OH groups this groups are capable of making hydrogen bonds with water molecules these OH interactions are responsible for the water solubility

Answer 2

Because IT IS NOT TRUE that “organic compounds” are insoluble in water. A lot of molecules with a polar function (and a not too big hydrocarbon chain) are more or less soluble in water