Write short notes on reducing and non-reducing sugars.

Answer: Reducing sugars: Any sugar that can act as a reducer because it is a free aldehyde radical or a free group is known as reducing sugar. All monosaccharides, as well as some disaccharides, oligosaccharides, and polysaccharides, are reducing sugars.

An OH group is attached to the anomeric carbon, which can reduce other compounds.The reducing sugars give positive reaction towards a Fehling solution.