Inert form of carbon is

Options

A. Diamond
B. Graphite
C. Coal
D. charcoal

Answer

To determine the inert form of carbon among the given options (diamond, graphite, coal, or charcoal), we can follow these steps:

### Step 1: Understand the term "inert"
- Inert refers to a substance that does not react with acids or bases.

### Step 2: Analyze the options
- **Diamond**: A crystalline form of carbon known for its hardness and lack of reactivity.
- **Graphite**: A form of carbon that can conduct electricity and reacts with acids and bases.
- **Coal**: A natural form of carbon that is combustible and can react with acids and bases.
- **Charcoal**: A porous form of carbon that can also react with acids and bases.

### Step 3: Identify the inert form
- Among the options, diamond is the only allotrope of carbon that does not react with acids or bases. It remains inert under various conditions.

### Conclusion
- Therefore, the inert form of carbon is **diamond**.

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