Which of the following is not obtained on fractional distillation of petroleum?

Options

A. Paraffin wax
B. Charcoal
C. Asphalt
D. CNG

Answer

To determine which of the following is not obtained on fractional distillation of petroleum, we need to understand the process of fractional distillation and the products typically derived from it.

### Step-by-Step Solution:

1. **Understanding Fractional Distillation**:
- Fractional distillation is a method used to separate a mixture into its individual components or fractions based on their boiling points.
- In this process, the mixture is heated, and as it reaches certain temperatures, different components vaporize and can be collected separately.

2. **Products of Fractional Distillation of Petroleum**:
- When petroleum undergoes fractional distillation, several products are obtained, including:
- **Paraffin Wax**: A solid hydrocarbon that can be collected from the distillation process.
- **Asphalt**: A heavy, viscous material that is also a byproduct of the distillation.
- **CNG (Compressed Natural Gas)**: A gaseous product that can be separated during the distillation.

3. **Identifying the Odd One Out**:
- Now, let's look at the options provided:
- **Paraffin Wax**: Obtained from fractional distillation.
- **Charcoal**: Not a product of fractional distillation; it is typically produced by the burning of wood in a low-oxygen environment (pyrolysis).
- **Asphalt**: Obtained from fractional distillation.
- **CNG**: Obtained from fractional distillation.

4. **Conclusion**:
- Among the options, **Charcoal** is the only substance that is not obtained from the fractional distillation of petroleum. Therefore, the answer is **Charcoal**.

### Final Answer:
- **Charcoal** is not obtained on fractional distillation of petroleum.