What do you understand by destructive distillation of coal? Draw a neat and labelled dia gram showing the laboratory set up for the destructive distillation of coal.

Explanation

### Step-by-Step Solution:

1. **Definition of Destructive Distillation of Coal**:
Destructive distillation of coal is a process where coal is heated in the absence of air. This process breaks down the organic substances in coal into various products. The absence of air prevents combustion, allowing the coal to decompose instead.

2. **Products of Destructive Distillation**:
The main products obtained from the destructive distillation of coal include:
- **Coke**: A solid carbonaceous residue used as a fuel and reducing agent in metallurgy.
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