Topic: Carbohydrates: classification, glucose, fructose· Biomolecules

Sugar 'X'A. is found in honey.B. is a keto sugar.C. exists in α and β - anomeric forms.D. is laevorotatory.'X' is :

1. D-Glucose

2. D-Fructose

3. Maltose

4. Sucrose

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Answer: 2. D-Fructose

Key idea: match each property.

D-Fructose is present in honey, is a keto sugar (ketohexose), exists as \(\alpha\) and \(\beta\) anomers (ring forms), and is laevorotatory (hence also called laevulose). Glucose is an aldose and dextrorotatory; maltose and sucrose are disaccharides (sucrose has no anomeric forms). Option (2).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Sugar 'X'A. is found in honey.B. is a keto sugar.C. exists in α and β - anomeric forms.D. is laevorotatory.'X' is :

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