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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Sucrose is a disaccharide and a non-reducing sugar. Reason (R) : Sucrose involves glycosidic linkage between C1 of β-glucose and C2 of α-fructose. Choose the most appropriate answer from the options given below : (1) Both (A) and (R) are true but (R) is not the true explanation of (A) (2) (A) is false but (R) is true. (3) (A) is true but (R) is false (4) Both (A) and (R) are true and (R) is the true explanation of (A)

1. Both (A) and (R) are true but (R) is not the true explanation of (A)
2. (A) is false but (R) is true.
3. (A) is true but (R) is false
4. Both (A) and (R) are true and (R) is the true explanation of (A)

Correct answer: Both (A) and (R) are true but (R) is not the true explanation of (A)

Solution

Sucrose is indeed a disaccharide and a non-reducing sugar, making assertion (A) true. However, the reason provided (R) incorrectly describes the glycosidic linkage in sucrose, which is actually between C1 of α-glucose and C2 of β-fructose, thus making (R) true but not a valid explanation for (A).

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