Question

Which of the following disaccharides is present in milk?

• A. Sucrose
• B. Lactose
• C. Maltose
• D. None of these

Hint:

Remember: Lactose intolerance occurs when the enzyme lactase (which digests lactose) is deficient.

Answer 1

The Correct Option is B

Step 1: Definition.
Lactose is the disaccharide sugar naturally found in milk and dairy products. It is composed of glucose + galactose.
Step 2: Analysis of options.
(A) Sucrose: Common sugar, found in sugarcane and beetroot, not in milk.
(B) Lactose: Correct — main sugar in milk.
(C) Maltose: Present in germinating grains, not in milk.
(D) None of these: Incorrect.
Step 3: Conclusion.
Hence, the correct answer is (B) Lactose.