which of the following colloidal systems, fog is an example?

Options

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

Explanation

To determine which colloidal system fog represents, we need to analyze the components of a colloidal system and identify the characteristics of fog.

### Step-by-Step Solution:

1. **Understanding Colloidal Systems**:
- A colloidal system consists of two main components: the dispersed phase and the dispersion medium. The dispersed phase is present in a smaller amount, while the dispersion medium is present in a larger amount.

2. **Identifying the States of Matter**:
- The dispersed phase can be in the form of solid, liquid, or gas. Similarly, the dispersion medium can also be in the form of solid, liquid, or gas.

3. **Types of Colloidal Systems**:
- Colloidal systems can be classified based on the states of the dispersed phase and the dispersion medium. Some common types include:
- Solid in liquid (sol)
- Liquid in liquid (emulsion)
- Gas in liquid (aerosol)
- Liquid in gas (aerosol)
- Solid in gas (smoke)

4. **Analyzing Fog**:
- Fog is a collection of tiny water droplets suspended in the air. In this case:
- The dispersed phase is liquid (water droplets).
- The dispersion medium is gas (air).

5. **Conclusion**:
- Since fog consists of liquid droplets dispersed in a gas, it is classified as an aerosol. Therefore, fog is an example of a colloidal system where the dispersed phase is liquid and the dispersion medium is gas.

### Final Answer:
Fog is an example of a colloidal system where the dispersed phase is liquid and the dispersion medium is gas (aerosol).