Which one is not an advantage of CNG over diesel

Options

A. Burns more efficiently
B. Easy to lay down pipelines for delivery
C. Cannot be siphoned off by thieves
D. Cannot be adulterated

Answer

To determine which option is not an advantage of Compressed Natural Gas (CNG) over diesel, we need to analyze the characteristics of both fuels and their respective advantages and disadvantages.

### Step-by-Step Solution:

1. **Understand CNG and Diesel**:
- CNG (Compressed Natural Gas) is primarily composed of methane and is stored at high pressure. It is used as an alternative fuel to diesel and gasoline.
- Diesel is a heavier fuel derived from crude oil, commonly used in vehicles, especially for heavy-duty applications.

2. **Identify Advantages of CNG**:
- CNG burns more efficiently than diesel, producing fewer undesirable gases and pollutants.
- CNG cannot be adulterated easily, making it a safer option for consumers.
- CNG is less harmful to the environment compared to diesel due to lower emissions.

3. **Evaluate the Options**:
- **Option 1: Burns more efficiently** - This is an advantage of CNG over diesel.
- **Option 2: Easy to lay down pipelines for delivery** - This is not an advantage; in fact, laying down pipelines for CNG distribution is challenging and costly.
- **Option 3: Cannot be shipped on or by thieves** - This is an advantage because CNG is less likely to be stolen compared to liquid fuels.
- **Option 4: Cannot be adulterated** - This is also an advantage of CNG.

4. **Conclusion**:
- The option that is not an advantage of CNG over diesel is **"easy to lay down pipelines for delivery."** This option highlights a logistical challenge rather than a benefit.

### Final Answer:
The correct answer is: **Easy to lay down pipelines for delivery.**

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