Which of the following is not a solid solution ?

Options

A. Brass
B. Bronze
C. Hydrated salts
D. Aerated drinks

Answer

To determine which of the following is not a solid solution, we will analyze each option provided: Brass, Bronze, Hydrated salts, and Aerated drinks.

### Step-by-Step Solution:

1. **Understanding Solid Solutions**:
- A solid solution is a homogeneous mixture of two or more substances where one substance (solute) is dissolved in another (solvent) in the solid state. Common examples include alloys.

2. **Analyzing Brass**:
- Brass is an alloy made primarily of copper and zinc. Since it is a mixture of metals and exists in the solid state, brass qualifies as a solid solution.

3. **Analyzing Bronze**:
- Bronze is another alloy, primarily composed of copper and tin. Like brass, it is a solid mixture of metals, thus it is also a solid solution.

4. **Analyzing Hydrated Salts**:
- Hydrated salts are salts that contain water molecules within their crystalline structure. When dissolved in water, they can form a solid solution. Therefore, hydrated salts can be considered as solid solutions.

5. **Analyzing Aerated Drinks**:
- Aerated drinks are beverages that contain dissolved carbon dioxide gas in a liquid (usually water). This is a gas-liquid solution, not a solid solution. Therefore, aerated drinks do not qualify as a solid solution.

### Conclusion:
Based on the analysis, the correct answer is that **aerated drinks are not a solid solution**.

### Final Answer:
**Aerated drinks** are not a solid solution.

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