Coal is processed in industries to get some useful products. Which of the following is not obtained from coal?

Options

A. coke
B. coal tar
C. coal gas
D. CNG

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which product is not obtained from coal. We need to analyze the options provided to identify the one that does not come from coal processing.

2. **Identifying Products from Coal**:
- **Coke**: This is produced by heating coal in the absence of oxygen. Therefore, coke is obtained from coal.
- **Coal Tar**: This is a byproduct of the carbonization of coal, which means it is also obtained from coal processing.
- **Coal Gas**: This is a mixture of gases that includes methane, hydrogen, and carbon dioxide, and is produced during the processing of coal. Thus, coal gas is also obtained from coal.

3. **Analyzing the Last Option**:
- **CNG (Compressed Natural Gas)**: CNG is not derived from coal; instead, it is a product of petroleum. Therefore, this option does not come from coal.

4. **Conclusion**: Based on the analysis, the product that is not obtained from coal is **CNG (Compressed Natural Gas)**.

5. **Final Answer**: The correct answer is **CNG**.

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