Which fuel reduces air pollution ?

Options

A. CNG
B. Petrol
C. LPG
D. Both CNG and LPG

Answer

To determine which fuel reduces air pollution, let's analyze the options provided step by step.

### Step-by-Step Solution:

1. **Identify the Fuels**: We have four fuels to consider: CNG (Compressed Natural Gas), Petrol, LPG (Liquefied Petroleum Gas), and an unspecified fourth option.

2. **Evaluate CNG**:
- CNG is known as an eco-friendly fuel.
- It releases significantly fewer harmful gases compared to other fuels.
- CNG minimizes air pollution and is encouraged for use in many areas to reduce air pollution.

3. **Evaluate Petrol**:
- Petrol is a common fuel used in vehicles.
- The combustion of petrol releases harmful gases that contribute to air pollution.
- Therefore, petrol increases air pollution rather than reducing it.

4. **Evaluate LPG**:
- LPG is similar to petrol and is derived from petroleum.
- Like petrol, LPG combustion also releases harmful gases.
- Hence, LPG does not play a significant role in reducing air pollution and can contribute to it.

5. **Conclusion**:
- After evaluating all the options, it is clear that CNG is the only fuel among the options that reduces air pollution.
- Therefore, the correct answer is **CNG (Compressed Natural Gas)**.

### Final Answer:
CNG (Compressed Natural Gas) reduces air pollution.

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