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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) : Source is a disaccharide and a non-reducing sugar. Reason (R) : </s

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

Answers (1)

best_answer

As we have learnt,

- Sucrose is a disaccharide of \mathrm{\alpha -D -} Glucose and \mathrm{\beta-D-} Fructose .

- It contains Glycosidic linkage between C1  of \mathrm{\alpha -D-} Glucose and C2  of \mathrm{\beta -D-}fructose .

- Since the hemi acetal is involved in Glycosidic linkage, sucrose is non reducing.

Hence, Assertion (A) is true while Reason (R) is false.

Thus, the correct answer is Option(2)

Posted by

Ritika Jonwal

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