Pollutants of automobile exhausts that affects nervous system/produces mental diseases in

Options

A. Mercury
B. Lead
C. Nitrogen dioxide
D. Sulphur dioxide

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about pollutants from automobile exhaust that can affect the nervous system and potentially lead to mental diseases.

2. **Identifying Common Pollutants:**
Automobile exhaust contains several harmful pollutants. Some of the most common ones include:
- Carbon monoxide (CO)
- Nitrogen oxides (NOx)
- Hydrocarbons (HC)
- Particulate matter (PM)
- Heavy metals (like lead and mercury)

3. **Focusing on Nervous System Effects:**
Among these pollutants, certain heavy metals are known to have significant effects on the nervous system. Two notable examples are:
- **Lead (Pb):** Known to cause neurological damage and cognitive deficits, especially in children.
- **Mercury (Hg):** Can lead to neurological and developmental disorders.

4. **Analyzing the Options:**
The options provided in the question likely refer to specific pollutants. Based on the knowledge of pollutants affecting the nervous system:
- **Lead** is a well-known neurotoxin that can lead to mental diseases.
- **Mercury** is also a neurotoxin but is less commonly associated with automobile exhaust compared to lead.

5. **Conclusion:**
Based on the analysis, the correct answer to the question is **Lead**, as it is a pollutant from automobile exhaust that affects the nervous system and can lead to mental diseases.

**Final Answer: Lead (Pb)**

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