In soda-acid fire extinguisher, _______ helps in putting out the fire.

C O_{2}

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C O_{2} + H_{2} O

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H_{2} O

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H_{2} O + H_{2}

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Solution

The correct option is B $C O_{2} + H_{2} O$
Fire extinguishing is done by the carbon dioxide that is produced when the acid reacts with baking soda in the extinguisher.
$2 N a H C O_{3} + H_{2} S O_{4} \to N a_{2} S O_{4} + 2 C O_{2} + 2 H_{2} O$

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