Question

In which of following sets the carbohydrates are reducing sugar

• A. glucose, fructose, sucrose
• B. maltose, lactose, sucrose
• C. cellulose, sucrose, starch
• D. maltose, lactose, fructose

Answer 1

Answer: (D)

A reducing sugaris any sugar that is capable of acting as a reducing agent because it has a free aldehyde group or a free ketone group. All monosaccharides are reducing sugars, along with some disaccharides, some oligosaccharides, and some polysaccharides.

Here maltose, lactose, fructose are reducing sugars. Sucrose is a non-reducing sugar.