The example of solid solution is

Options

A. Glucose in water
B. Copper in gold
C. Camphor in nitrogen
D. Oxygen in nitrogen

Answer

To determine the example of a solid solution from the given options, we need to understand the definition of a solid solution and analyze each option accordingly.

### Step-by-Step Solution:

1. **Understanding Solid Solution**:
- A solid solution is a homogeneous mixture of two or more substances where both the solute and solvent are in the solid state. This means that the components must be able to dissolve in each other while remaining solid.

2. **Analyzing the Options**:
- **Option 1: Glucose in Water**:
- Glucose is a solid, but water is a liquid. Since one component is not in solid form, this cannot be a solid solution.
- **Option 2: Copper in Gold**:
- Both copper and gold are metals and exist in solid form. Copper can dissolve in gold to form a solid solution, making this a valid example.
- **Option 3: Camphor in Nitrogen**:
- Camphor is a solid, but nitrogen is a gas. Since one component is not solid, this cannot be a solid solution.
- **Option 4: Oxygen in Nitrogen**:
- Both oxygen and nitrogen are gases. Since both components are not solid, this cannot be a solid solution.

3. **Conclusion**:
- After analyzing all the options, only **Option 2: Copper in Gold** qualifies as an example of a solid solution.

### Final Answer:
The example of a solid solution is **Copper in Gold**.