Mutarotation in aqueous solution is shown by

Options

A. Glycogen
B. Sucrose
C. Cellulose
D. Maltose

Answer

To answer the question regarding which compound shows mutarotation in aqueous solution, we will analyze each option provided:

### Step-by-Step Solution:

1. **Understanding Mutarotation**:
- Mutarotation refers to the change in the optical rotation of a solution as it reaches equilibrium between different anomeric forms (alpha and beta) of a sugar. This phenomenon occurs in sugars that can interconvert between their anomeric forms in solution.

2. **Analyzing Each Option**:
- **Option 1: Glycogen**:
- Glycogen is a branched polysaccharide and is classified as a non-reducing sugar. Non-reducing sugars do not show mutarotation because they do not have a free anomeric carbon that can interconvert. Therefore, glycogen does not show mutarotation.

- **Option 2: Sucrose**:
- Sucrose is also a non-reducing sugar. It lacks a free hydroxyl group on the anomeric carbon due to the glycosidic bond between glucose and fructose. As a result, sucrose does not show mutarotation.

- **Option 3: Cellulose**:
- Cellulose is another non-reducing sugar and is a polysaccharide made up of glucose units. Similar to glycogen and sucrose, cellulose does not have a free anomeric carbon and therefore does not exhibit mutarotation.

- **Option 4: Maltose**:
- Maltose is a disaccharide composed of two glucose units linked by a glycosidic bond. Maltose has a free anomeric carbon in one of the glucose units, allowing it to interconvert between its alpha and beta forms. This interconversion leads to a change in optical rotation, indicating that maltose does show mutarotation.

3. **Conclusion**:
- Based on the analysis, the only compound that shows mutarotation in aqueous solution is **Maltose** (Option 4).

### Final Answer:
**Maltose shows mutarotation in aqueous solution.**

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