Which of the following reagents is used to distinguish between glucose and cane sugar?

Options

A. Molisch's reagent
B. Benedict's reagent
C. Tollens' solution
D. Both (2) and (3)

Explanation

To determine which reagents can distinguish between glucose and cane sugar (sucrose), we need to understand the chemical properties of these sugars.

### Step-by-Step Solution:

1. **Identify the Types of Sugars**:
- Glucose is a monosaccharide and has a free aldehyde group (-CHO).
- Cane sugar (sucrose) is a disaccharide and does not have a free aldehyde group because it is formed from the glycosidic bond between glucose and fructose.

2. **Understanding the Reagents**:
- **Fehling's Solution**: This reagent contains copper(II) ions and is used to test for reducing sugars. It gives a positive result (a color change) in the presence of free aldehyde groups.
- **Tollens' Reagent**: This reagent also tests for aldehydes and will give a positive result if an aldehyde group is present.
- **Benedict's Reagent**: Similar to Fehling's solution, it tests for reducing sugars and will show a positive result with free aldehyde groups.

3. **Testing the Sugars**:
- When glucose is tested with Fehling's solution, Tollens' reagent, or Benedict's reagent, it will give a positive test because it has a free aldehyde group.
- When cane sugar is tested with the same reagents, it will give a negative test because it does not have a free aldehyde group.

4. **Conclusion**:
- The reagents that can distinguish between glucose and cane sugar are Fehling's solution, Tollens' reagent, and Benedict's reagent. The correct answer to the question is that both Tollens' reagent and Benedict's reagent can be used to distinguish between glucose and cane sugar.

### Final Answer:
The reagents used to distinguish between glucose and cane sugar are **Tollens' reagent and Benedict's reagent**.

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