Question

The non-reducing table sugar is

• A. Glucose
• B. Sucrose
• C. Galactose
• D. Mannose

Answer 1

The correct option is B Sucrose

Sucrose is formed by the glycosidic linkage between glucose and fructose. The bond is formed between the between C${}_1$ on the glucosyl subunit and C${}_2$ on the fructosyl unit. It has no free aldehyde or keto group so they are known as non- reducing sugar. The anomeric carbon of glucose and fructose forms the glycosidic bonds.

So, the correct answer is option B.