The following carbohydrate is, a ketohexose, an aldohexose, an α -furanose, an α -pyranose

Here, the- OH of hemiacetal group is equatorial therefore, it is a β -pyranose of an aldohexose.

The following carbohydrate is

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The following carbohydrate is

ChemistryBiomoleculesJEE AdvancedJEE Advanced 2011 (Paper 2)

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The correct answer is:
an aldohexose

Here, the- $\mathrm{OH}$ of hemiacetal group is equatorial therefore, it is a $\beta$-pyranose of an aldohexose.

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