Question

what is the meaning of dehydration of carbohydrates

Answer 1

Dehydration means the loss of one or more molecules of water. Carbohydrates are organic compounds consisting of carbon, hydrogen and oxygen which have the general formula C_m(H₂O)_n, where m and n are any integral numbers. So dehydration of carbohydrates means the loss of water molecules from carbohydrates. This can be achieved by either heating them, or treating the with dehydrating agents like concentrated sulphuric acid.