Home Chemistry Biomolecules Karnataka - Previous Year Question Sucrose is not a reducing sugar since
Chemistry Biomolecules Karnataka - Previous Year Question Single Correct MCQ
Published on: August 12, 2026

Sucrose is not a reducing sugar since

A
it is chemically stable
B
it contains no free aldehyde or keto group adjacent to a CHOH group
C
it is built up of a fructose unit
D
it is optically active.

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Text Solution

Verified by Experts
The correct answer is:
B

: All those carbohydrates which contain aldehydic or ketonic group in the hemiacetal or hemiketal form and reduce Tollens' or Fehling's reagent are called reducing sugars. Disaccharides like sucrose in which the two monosaccharide units are linked through their reducing centres, i.e., aldehydic or ketonic groups are non-reducing.

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