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

Options

A. Paraffin wax
B. Asphalt
C. Coal gas
D. Petroleum gas

Answer

To solve the question "Which of the following is not obtained on fractional distillation of petroleum?", we will analyze the options provided and identify which substance is not a product of this process.

### Step-by-Step Solution:

1. **Understand Fractional Distillation**:
- Fractional distillation is a process used to separate a mixture into its individual components based on different boiling points. It is commonly used in the petroleum industry to separate crude oil into various useful products.

2. **Identify Products of Fractional Distillation of Petroleum**:
- The common products obtained from the fractional distillation of petroleum include:
- Paraffin wax
- Asphalt
- Petroleum gas

3. **Analyze the Given Options**:
- The options provided are:
- Paraffin wax
- Asphalt
- Coal gas
- Petroleum gas
- From our understanding, paraffin wax, asphalt, and petroleum gas are all products of fractional distillation of petroleum.

4. **Identify the Odd One Out**:
- Coal gas is not obtained from the fractional distillation of petroleum. Instead, coal gas is produced through the destructive distillation of coal, which is a different process altogether.

5. **Conclusion**:
- Therefore, the correct answer to the question is **coal gas**, as it is not obtained from the fractional distillation of petroleum.

### Final Answer:
Coal gas is not obtained from fractional distillation of petroleum.

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