Which gas is evolved from fire extinguisher?

C O_{2}

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C O

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C O_{3}

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H_{2}

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Solution

The correct option is A $C O_{2}$
Carbon dioxide $(C O_{2})$ gas is evolved from fire extinguisher. In soda acid fire extinguisher, a chemical reaction between conc sodium bicarbonate solution and conc sulphuric acid generates carbon dioxide. In foamite fire extinguisher, the reaction between baking soda and and aluminium sulphate generates carbon dioxide.

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Which gas is commonly used as a fire extinguisher?

{CO}_{2}

The correct order of C-O bond length among CO, CO₃^2-and CO₂ is

C O_{2}

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