WAEC 2025
Which of the following gases is used in fire extinguishers?
- ACarbon(IV)oxide
- BNitrogen(IV)oxide
- CCarbon(II)oxide
- DSulphur(IV)oxide
Explanation
Carbon(IV)oxide (CO2) is used in fire extinguishers because it does not support combustion and is denser than air, allowing it to blanket the fire and cut off the oxygen supply.
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