The substance that does not burn with flame is

Options

A. LPG
B. camphor
C. dry grass
D. charcoal

Answer

To determine which substance does not burn with a flame, we will analyze the given options one by one.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are LPG, camphor, dry glass, and charcoal.

2. **Analyze LPG**:
- LPG stands for liquefied petroleum gas.
- It is a gas that burns with a flame when ignited.
- **Conclusion**: LPG burns with a flame.

3. **Analyze Camphor**:
- Camphor is a substance that can undergo sublimation, transitioning from solid to gas without becoming liquid.
- When camphor is heated, it burns and produces a flame.
- **Conclusion**: Camphor burns with a flame.

4. **Analyze Dry Glass**:
- Dry glass is not a combustible material.
- It does not burn or produce a flame when heated.
- **Conclusion**: Dry glass does not burn with a flame.

5. **Analyze Charcoal**:
- Charcoal is a carbon-rich residue that remains after burning wood.
- While charcoal can smolder and produce heat, it does not produce a visible flame when it burns.
- **Conclusion**: Charcoal does not burn with a flame.

6. **Final Conclusion**:
- Among the options, dry glass and charcoal do not burn with a flame.
- However, since the question asks for a substance that does not burn with flame, the best answer is **charcoal**, as it is a substance that is typically associated with burning but does not produce a flame.

### Final Answer:
**Charcoal** is the substance that does not burn with a flame.

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