The ‘D’ in D-(+)-glucose represents its dextrorotatory behaviour.(a) True(b) FalseThe question was asked in an international level competition.The doubt is from Biomolecules Carbohydrates in portion Biomolecules of Chemistry – Class 12

The ‘D’ in D-(+)-glucose represents its dextrorotatory behaviour.(

1.	The ‘D’ in D-(+)-glucose represents its dextrorotatory behaviour.(a) True(b) FalseThe question was asked in an international level competition.The doubt is from Biomolecules Carbohydrates in portion Biomolecules of Chemistry – Class 12
Answer» RIGHT CHOICE is (b) False The best I can explain: The ‘D’ represents the correlation of the STRUCTURE to that of (+)-glyceraldehyde, in which the OH attached to the carbon adjacent to the CH2OH is on the right-hand side of the chain. Likewise, when the OH of the last ASYMMETRIC carbon in glucose lies on the left-hand side of the chain, it is known as L-glucose.

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