Answer :

Sodium hydrogen carbonate (NaHCO3) which is also known as baking soda or eatable soda.

i. Soda acid fire extinguishers contain a mixture of sulphuric acid and baking soda inside it.


ii. When knob of the fire extinguisher is pressed, sulphuric acid get mixed with baking soda which produces a lot of CO2 gas.



iii. CO2 gas covers the surroundings of fire.


iv. It stops the supply of air to the burning substance.


v. Hence, fire gets extinguished.

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