Given below are two statements one is labelled as Assertion (A) and other is labeled as Reason (R).
Assertion (A) : Sucrose is a disaccharide and a non-reducing sugar
Reason (R) : Sucrose involves glycosidic linkage between C₁ of $α$ -glucose and C₂ of $β$ - fructose.
Choose the most appropriate answer the options given below :

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(A) is true but (R) is false

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

(A) is false but (R) is true

Both (A) and (R) are true and (R) is the true explanation of (A)

answer is D.

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Detailed Solution

Sucrose is made up of two monosaccharides: glucose and fructose.
These two monosaccharides are held together by a glycosidic linkage between C−1 of glucose and C−2 of fructose.
Since the reducing groups of glucose and fructose (i.e the free aldehyde/ketone groups) are involved in the glycosidic bond formation and are not available, sucrose is a non-reducing sugar.

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