Statement-1: Molecular mass of D-glucose increases by 210 on treatment with excess acetic anhydride.
Statement-2: D-glucose principally exists in cyclic form.

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Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is True, Statement-2
is NOT a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is False.

Statement-1 is False, Statement-2 is True.

answer is B.

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Detailed Solution

D-glucose can be seen in three dimensions or using a Fischer projection. The cyclic monosaccharide -D-glucopyranose is created when the aldehyde group and the OH group on the fifth carbon atom combine.
Also D-molecular glucose's mass increases by 210 when treated with too much acetic anhydride.
But 2 doesn't explain 1.

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