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Sucrose is a _______ compound and the product mixture obtained from its hydrolysis is _______ in nature.

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in Chemistry – Class 12 by (188k points)
Sucrose is a _______ compound and the product mixture obtained from its hydrolysis is _______ in nature.

(a) dextrorotatory; dextrorotatory

(b) dextrorotatory; laevorotatory

(c) laevorotatory; dextrorotatory

(d) laevorotatory; laevorotatory

The question was posed to me in semester exam.

The question is from Biomolecules Carbohydrates topic in division Biomolecules of Chemistry – Class 12

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Right choice is (b) dextrorotatory; laevorotatory

For explanation I would say: Sucrose is dextrorotatory but on hydrolysis gives a mixture dextrorotatory glucose and laevorotatory fructose. Since, the specific rotation of fructose is greater than that of glucose, the resultant mixture is laevorotatory.

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