Which of the following is an example of a solid solution ?

Options

A. sea water
B. sugar solution
C. smoke
D. 22 carat gold

Answer

To determine which of the given options is an example of a solid solution, we need to understand what a solid solution is. A solid solution is a homogeneous mixture where one or more solutes are dissolved in a solid solvent.

### Step-by-Step Solution:

1. **Define Solid Solution**:
- A solid solution is formed when one or more solutes are dissolved in a solid solvent. The solute particles are uniformly distributed within the solvent.

2. **Analyze the Options**:
- **Option 1: Sea Water**: This is a liquid solution where salt (solute) is dissolved in water (solvent). Therefore, it is not a solid solution.
- **Option 2: Sugar Solution**: This is also a liquid solution where sugar (solute) is dissolved in water (solvent). Hence, it is not a solid solution.
- **Option 3: Smoke**: Smoke is a mixture of gases and is not a solid solution. It consists of particulate matter suspended in air.
- **Option 4: 22 Carat Gold**: This is an alloy where gold (the solvent) has other metals (like zinc or nickel) mixed in. These metals act as solutes, and since they are mixed in a solid form, this qualifies as a solid solution.

3. **Conclusion**:
- Among the options provided, **22 carat gold** is the only example of a solid solution because it consists of a solid solvent (gold) with one or more solid solutes (other metals).

### Final Answer:
**The correct option is 22 carat gold.**

---