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Aldohexoses are six carbon sugars with four chirality centres and an aldehyde carbonyl group.

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Aldohexoses are six carbon sugars with four chirality centres and an aldehyde carbonyl group. There are 16 possible stereoisomeric aldohexoses. D-glucose and D-mannose are X of each other. Here, ‘X’ refers to

(a) epimers

(b) anomer

(c) enantiomer

(d) diasteromer

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Correct option is (a) epimers

D-mannose and D-glucose differ at configuration at C-2 only. Hence, they are epimers. The structure of D-mannose and D-glucose are as follows :

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