Question

Fructose and glucose can be distinguished by:

• A. Seliwanoff’s reagent
• B. Benedict’s reagent
• C. Fehling’s reagent
• D. Barfoed’s reagent

Answer 1

The correct option is A Seliwanoff’s reagent

Seliwanoff’s reagent is used in a test which helps to distinguish between an aldose and a ketose sugar. Fructose is a ketose sugar, whereas glucose is a aldose sugar.

Benedict’s reagent and Fehling's reagent are used to detect the presence of reducing sugars.
Barfoed's reagent is used for detecting the presence of monosaccharides.