Fog is a colloidal system of :-

Options

A. Liquid dispersed in gas
B. Liquid dispersed in liquid
C. Solid dispersed in gas
D. Solid dispersed in liquid

Answer

To determine the nature of fog as a colloidal system, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Colloids**:
- A colloid is a mixture where one substance (the dispersed phase) is microscopically dispersed throughout another substance (the dispersion medium).

2. **Identifying the Components**:
- In a colloidal system, the dispersed phase can be either solid or liquid, while the dispersion medium can be a solid, liquid, or gas.

3. **Analyzing Fog**:
- Fog is commonly observed as a collection of tiny water droplets suspended in the air. Here, the water droplets represent the dispersed phase, and the air represents the dispersion medium.

4. **Classifying Fog**:
- Since the dispersed phase (water droplets) is in liquid form and the dispersion medium (air) is a gas, we can classify fog as a colloidal system.

5. **Conclusion**:
- Therefore, fog is a colloidal system where the dispersed phase is liquid (water) and the dispersion medium is gas (air).

### Final Answer:
Fog is a colloidal system of liquid dispersed in gas.

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