Solid pollutants do not include:

Options

A. Dust
B. Aerosols
C. Sulphur dioxide
D. Smoke

Answer

To solve the question "Solid pollutants do not include:", we will analyze each option provided to determine which one is not a solid pollutant.

### Step-by-Step Solution:

1. **Understanding Pollutants**:
- Pollutants are substances that cause pollution. They can be in different states: solid, liquid, or gas.

2. **Analyzing the Options**:
- **Option 1: Dust**:
- Dust consists of tiny solid particles, such as sand and dirt. Therefore, dust is a solid pollutant.

- **Option 2: Aerosols**:
- Aerosols are tiny solid or liquid particles suspended in the air. They can include solid particles, making aerosols a solid pollutant.

- **Option 3: Sulfur Dioxide (SO2)**:
- Sulfur dioxide is a gas. It does not consist of solid particles and is therefore not a solid pollutant.

- **Option 4: Smoke**:
- Smoke is produced from burning materials and contains solid particles (like soot). Thus, smoke is considered a solid pollutant.

3. **Identifying the Correct Answer**:
- After analyzing all the options, we can conclude that the only option that does not qualify as a solid pollutant is **Option 3: Sulfur Dioxide**.

### Final Answer:
**Sulfur Dioxide (SO2)** is the correct answer as it is not a solid pollutant.

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