Q.

Statement-I: α-D(+) -glucopyranose and β-D(+)-glucopyranose are enantiomers.Statement-II: Melting point of β-D(+)-glucopyranose is higher than that of α-D(+) -glucopyranose.

Moderate

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Both statements I and II are correct

Statement-I is correct and statement-II is incorrect

Statement-I is incorrect and statement-II is correct

Both statements I and II are incorrect

answer is C.

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Detailed Solution

α-D-glucose and β-D-glucose differ in their configuration only at C-1 (or) functional group carbon (anomeric carbon). They are anomers (or) diastereomers (or) C-1 epimers.They are not enantiomers. Melting point of α-D-glucose pyranose -419 K.Melting point of β-D-glucose pyranose -423 K.

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