A) X and Y are diastereomers
B) X and Y are enantiomers
C) X and Y are both aldohexoses
D) X is a D-sugar and Y is an L-sugar
Correct Answer: B
Solution :
Both the given molecules contain 6 carbon atoms with an aldehyde group, so these are called aldohexoses. In X, the -OH attached to second last carbon in on right hand side while in Y it is on left hand side, so X is D-sugar and Y is L-sugar. X and Yare the mirror images of each other, i.e., these are enantiomers.
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