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Question

The best fire extinguisher for inflammable materials is:

A
Water
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B
SO2
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C
CO2
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D
CO
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Solution

The correct option is C CO2
Carbon dioxide is ideal for fires involving electrical apparatus, and it will also extinguish liquid fires because:
1. It neither burns nor helps in burning
2. It is heavier than air and thus it insulates the burning substance by cutting off its supply of oxygen

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