Incomplete combustion of petrol or diesel in automobile engine produces

Options

A. CO and `H_(2)O` vapours
B. `CO and NO_(2)`
C. CO
D. `SO_(2)`

Explanation

**Step-by-Step Solution:**

1. **Understanding Combustion**:
- Combustion is a chemical reaction that occurs when a substance reacts with oxygen, producing heat and light. In the case of petrol and diesel, which are fossil fuels, they primarily consist of carbon and hydrogen.

2. **Complete Combustion**:
- In complete combustion, there is a sufficient supply of oxygen. The products of complete combustion of hydrocarbons (like petrol and diesel) are carbon dioxide (CO₂) and water (H₂O), along with energy.

3. **Incomplete Combustion**:
- In contrast, incomplete combustion occurs when there is a limited supply of oxygen. This leads to the formation of different products.

4. **Products of Incomplete Combustion**:
- The primary products of incomplete combustion of petrol and diesel include:
- Carbon monoxide (CO), which is a toxic gas.
- Water vapor (H₂O).
- A smaller amount of energy compared to complete combustion.

5. **Conclusion**:
- Therefore, the incomplete combustion of petrol or diesel in an automobile engine produces carbon monoxide and water vapor.

**Final Answer**: The incomplete combustion of petrol or diesel in an automobile engine produces carbon monoxide and water vapor.

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