Carbohydrates
Which of the following is a non-reducing sugar?
Select the correct option:
Solution
Sucrose
Sucrose is a non-reducing sugar because it has no free anomeric (aldehyde or ketone) carbon — both anomeric carbons of glucose and fructose are involved in the glycosidic bond. Glucose, fructose, and maltose all possess free anomeric carbons and hence reduce Fehling's or Benedict's reagent.
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About This Question
- Subject
- chemistry
- Chapter
- biomolecules
- Topic
- carbohydrates
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Sucrose
Sucrose is a non-reducing sugar because it has no free anomeric (aldehyde or ketone) carbon — both anomeric carbons of glucose and fructose are involved in the glycosidic bond. Glucose, fructose, and maltose all possess free anomeric carbons and hence reduce Fehling's or Benedict's reagent.
This easy difficulty chemistry question is from the chapter biomolecules, covering the topic of carbohydrates. It appeared in the 2025 exam.
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