Sulphur dioxide causes

Options

A. asthma
B. bronchitis
C. emphysema
D. all of these

Answer

**Step-by-Step Solution:**

1. **Understanding Sulphur Dioxide (SO2):**
- Sulphur dioxide is a colorless gas with a pungent odor, primarily produced from burning fossil fuels and industrial processes.

2. **Identifying Health Effects:**
- Sulphur dioxide is known to have several harmful effects on human health, particularly affecting the respiratory system.

3. **Linking SO2 to Respiratory Diseases:**
- It can cause various respiratory issues, including:
- **Asthma:** SO2 can trigger asthma attacks and worsen symptoms in individuals with pre-existing asthma.
- **Bronchitis:** Exposure to SO2 can lead to inflammation of the bronchial tubes, causing bronchitis.
- **Emphysema:** Chronic exposure can damage the alveoli in the lungs, leading to emphysema.

4. **Recognizing Other Symptoms:**
- In addition to respiratory diseases, SO2 can cause symptoms such as eye irritation, coughing, and increased mucus secretion.

5. **Conclusion:**
- Since sulphur dioxide can cause asthma, bronchitis, and emphysema, the correct answer to the question "Sulphur dioxide causes" is **D: all of these**.