JEE Advanced2009ChemistryBiomoleculesActual

The correct statement(s) about the following sugars X and Y is (are)

Options

AX is a reducing sugar and Y is a non-reducing sugar
BX is a non-reducing sugar and Y is a reducing sugar
Cthe glucosidic linkages in X and Y are and , respectively
Dthe glucosidic linkages in X and Y are and , respectively

Correct answer

B. X is a non-reducing sugar and Y is a reducing sugar

Step-by-step solution

X has acetal linkage and Y has hemiacetal linkage. Carbohydrate with hemiacetal linkage are reducing sugars and carbohydrate with acetal linkage are non reducing sugars. X is anomer and Y is -anomer of D(+) glucose.

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