Which of the following is an amorphous form of carbon?

Options

A. Wood charcoal
B. Animal charcoal
C. Gas carbon
D. All of these

Answer

To determine which of the following is an amorphous form of carbon, we need to understand what amorphous carbon is and identify examples of it.

### Step-by-Step Solution:

1. **Understanding Amorphous Carbon**:
- Amorphous carbon is a form of carbon that does not have a crystalline structure. It is typically produced by the incomplete combustion of organic materials or through the pyrolysis of organic substances in the absence of air.

2. **Identifying Examples**:
- Common examples of amorphous carbon include:
- Charcoal
- Lamp black (a form of carbon black)
- Wood charcoal
- Gas carbon

3. **Analyzing the Options**:
- If the options provided include any of the examples listed above, those would be classified as amorphous forms of carbon.

4. **Conclusion**:
- Based on the information provided, if "charcoal" or "lamp black" is among the options, then that would be the correct answer as they are both amorphous forms of carbon.

### Final Answer:
- The amorphous form of carbon from the options provided is **charcoal**.

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