In the destructive distillation of coal, at 443 - 503 K temperature, a middle oil or carbolic oil fraction is obtained. This fraction contains:

Options

A. (a) Phenol
B. (b) Xylenes
C. (c) Napthalene
D. (d) Benzene

Answer

To solve the question regarding the components of the middle oil or carbolic oil fraction obtained from the destructive distillation of coal at temperatures between 443 K and 503 K, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Destructive Distillation**:
- Destructive distillation is a process where organic material (like coal) is heated in the absence of air, leading to the breakdown of complex organic molecules into simpler compounds.

2. **Identify the Temperature Range**:
- The question specifies that the middle oil or carbolic oil fraction is obtained at temperatures between 443 K and 503 K.

3. **Identify the Compounds in the Carbolic Oil Fraction**:
- From the knowledge of the distillation process, we know that different fractions contain different compounds based on their boiling points.
- At the specified temperature range (443 K to 503 K), the compounds that are typically found in the carbolic oil fraction include:
- **Phenol**
- **Pyridine**
- **Naphthalene**

4. **Conclusion**:
- Therefore, the middle oil or carbolic oil fraction obtained from the destructive distillation of coal at the specified temperature contains phenol, pyridine, and naphthalene.

### Final Answer:
The middle oil or carbolic oil fraction contains **phenol, pyridine, and naphthalene**.

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