Which of the following is the most environment friendly fuel to be used in automobiles?

Options

A. petrol
B. diesel
C. natural gas
D. petroleum gas

Answer

To determine the most environmentally friendly fuel to be used in automobiles, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: First, we need to identify the different fuel options available for automobiles. Common fuels include petrol, diesel, compressed natural gas (CNG), and liquefied petroleum gas (LPG).

2. **Understand CNG**: Compressed Natural Gas (CNG) is primarily composed of methane. It is known for being eco-friendly compared to other fossil fuels.

3. **Assess Environmental Impact**: When CNG is combusted, it releases significantly lower amounts of carbon and other harmful emissions compared to petrol and diesel. This means that its use contributes less to air pollution and greenhouse gas emissions.

4. **Greenhouse Gases**: CNG helps reduce the emission of greenhouse gases, which are responsible for global warming. The main greenhouse gases include carbon dioxide, methane, and nitrous oxide.

5. **Conclusion**: Given the information about the environmental impact of CNG, it is clear that CNG is a more sustainable option for automobiles compared to petrol, diesel, and LPG.

6. **Final Answer**: Therefore, the most environmentally friendly fuel to be used in automobiles is **Compressed Natural Gas (CNG)**.