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Which gas helps put out fire in a soda acid fire extinguisher?

Answer and explanation

Correct answer: Carbon dioxide

In a soda-acid fire extinguisher, sodium hydrogen carbonate reacts with an acid to produce carbon dioxide. This gas forms a blanket over the fire and cuts off its contact with oxygen, thereby stopping combustion. Oxygen is a close distractor, but it supports burning rather than putting out a fire. Exam tip: Remember carbon dioxide as the gas that smothers fire in this extinguisher.

Related tags

Class 10 ScienceAcids Bases SaltsSoda Acid Fire ExtinguisherCarbon DioxideCombustionFire Safety

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