how a fire extinguisher extinguishes the fire
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Dry powder extinguishers are tanks of dry powder with compressed nitrogen as the propellant. ... Foam extinguishers are tanks of water and foam with compressed nitrogen as the propellant. They work by smothering the fire: when you spread a thin layer of foam over a fire, you cut the fuel off from the oxygen around it.
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Fire extinguisher contains CO2 and fire can only happen in the presence of O2 , if we use fir extinguisher then the Oxygen rate will go down and the fire will no longer remain.
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