A liquid aerosol is a colloidal system of:

Options

A. A liquid dispersed in a solid
B. A liquid dispersed in a gas
C. A gas dispersed in a liquid
D. A solid dispersed in a gas

Answer

To solve the question regarding the nature of a liquid aerosol as a colloidal system, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Aerosols**:
- An aerosol is a colloidal system where tiny particles are dispersed in a medium. It can be either a solid or a liquid dispersed in a gas.

2. **Identify the Components of a Liquid Aerosol**:
- In a liquid aerosol, the dispersed phase is the liquid, and the dispersion medium is the gas.

3. **Analyze the Options Given**:
- Option 1: A liquid dispersed in a solid - This does not describe an aerosol.
- Option 2: A liquid dispersed in a gas - This correctly describes a liquid aerosol.
- Option 3: A gas dispersed in a liquid - This describes a different type of colloidal system (a foam).
- Option 4: A solid dispersed in a gas - This describes a smoke or aerosol of solid particles.

4. **Conclusion**:
- Based on the definitions and analysis of the options, the correct answer is that a liquid aerosol is a colloidal system of a liquid dispersed in a gas.

### Final Answer:
- The correct option is **Option 2: A liquid dispersed in a gas**.

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