The correct statement w.r.t to lead in petrol

Options

A. Acts as a catalyst in catalytic converters
B. Activates the catalyst of converter
C. Inactivates the catalyst of converter
D. Lubricates the engine

Answer

**Step-by-Step Solution:**

1. **Understanding Lead in Petrol:**
- Lead was historically added to petrol (gasoline) to improve engine performance and reduce knocking. However, it has harmful environmental and health effects.

2. **Role of Catalytic Converters:**
- Catalytic converters are devices in vehicles that convert harmful gases from the engine into less harmful emissions. They typically contain catalysts like palladium and rhodium.

3. **Impact of Lead on Catalysts:**
- When lead is present in petrol, it can interfere with the functioning of these catalysts. Specifically, lead can bind to the active sites of the catalysts, rendering them ineffective.

4. **Analyzing the Options:**
- **Option A:** "Acts like a catalyst in catalytic converter" - This is incorrect because lead does not act as a catalyst.
- **Option B:** "Activates the catalyst in catalytic converter" - This is incorrect as lead does not activate catalysts.
- **Option C:** "Inactivates the catalyst in catalytic converter" - This is correct because lead indeed inactivates the catalysts, preventing them from reducing harmful emissions.
- **Option D:** "Helps in lubrication of the engine" - This is also incorrect as lead does not serve a lubrication function.

5. **Conclusion:**
- The correct statement regarding lead in petrol is that it inactivates the catalyst in the catalytic converter, making option C the right choice.

**Final Answer:**
- The correct statement with respect to lead in petrol is: **C. It inactivates the catalyst in the catalytic converter.**

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