Question

Assertion (A): Fructose is a reducing sugar.
Reason (R): Fructose does not reduce Fehling solution and Tollen’s reagent.

• A. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

Fructose is a reducing sugar because it can isomerize to an aldose form, which is capable of reducing Tollen's and Fehling's solutions.

Answer 1

The Correct Option is C

- Assertion (A) is true because fructose is a reducing sugar. It contains a carbonyl group in the form of a ketone, which can reduce Fehling's solution and Tollen's reagent under certain conditions.
- Reason (R) is false because fructose, being a reducing sugar, can reduce Tollen’s reagent and Fehling’s solution. The statement that fructose does not reduce these reagents is incorrect.

Step 1: Fructose, though a ketose, has reducing properties due to its ability to undergo isomerization into an aldose form.


Step 2: Fructose is a reducing sugar and can reduce Fehling’s solution and Tollen’s reagent.