Give reason for the following:
Hydrogen can be used as a fuel.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Fuel**: A fuel is a substance that can be burned to produce energy, usually in the form of heat or electricity.

2. **Calorific Value**: Hydrogen has the highest calorific value among all fuels. This means it releases a large amount of energy when it is burned.

3. **Combustion of Hydrogen**: When hydrogen combusts, it reacts with oxygen to produce water and releases energy in the form of heat. The reaction can be represented by the equation:
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