Charcoal does not produce a flame because

Options

A. it is a solid fuel
B. it has very high calorific value
C. it does not vapourise
D. it is black in colour

Answer

### Step-by-Step Text Solution:

1. **Understanding the Question**: The question asks why charcoal does not produce a flame when burned.

2. **Definition of Flame**: A flame is defined as the visible gaseous part of fire. This means that for a flame to be visible, there must be a gas produced during combustion.

3. **Combustion of Charcoal**: When charcoal burns, it does not vaporize into gas. Instead, it primarily undergoes a process of combustion that produces heat and light without creating a significant amount of gaseous products.

4. **Vaporization Requirement**: For a substance to produce a flame, it must vaporize. Since charcoal does not vaporize, it cannot produce the gaseous part that is necessary for a flame.

5. **Conclusion**: Therefore, the reason charcoal does not produce a flame is that it does not vaporize during combustion.

6. **Correct Answer**: The correct answer to the question is that charcoal does not vaporize, which is option 3.