Which of the following compounds is used in gun powder?

Options

A. `NaNO_3`
B. `KNO_3`
C. `LiNO_3`
D. none of these

Answer

To determine which compound is used in gunpowder, let's analyze the components of gunpowder and identify the correct compound.

### Step 1: Understand the Composition of Gunpowder
Gunpowder, also known as black powder, is traditionally composed of three main ingredients:
- Charcoal
- Sulfur
- Potassium nitrate (KNO3)

### Step 2: Identify the Compounds
From the question, we need to identify which of the given compounds is used in gunpowder. The key compound that is essential for the combustion process in gunpowder is potassium nitrate.

### Step 3: Conclusion
Among the options provided, the compound that is used in gunpowder is potassium nitrate (KNO3).

### Final Answer
The compound used in gunpowder is **Potassium Nitrate (KNO3)**.

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