How does a dry powder type fire extinguisher work?

Explanation

### Step-by-Step Solution:

1. **Understanding the Composition**: A dry powder type fire extinguisher primarily contains Sodium Bicarbonate (NaHCO3), also known as Sodium Hydrogen Carbonate.

2. **Heat Generation During Combustion**: When a substance burns, it generates heat. This heat affects the surrounding environment and the materials present, including the Sodium Bicarbonate in the extinguisher.

3. **Decomposition of Sodium Bicarbonate**: The heat causes Sodium Bicarbonate to decompose. The decomposition reaction can be represented as:
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