Question

explain how carbon dioxide is able to control a fire

Answer 1

hey carbon dioxide is heavier than oxygen and thus firm a layer on the surface of the cumbustible substance , breaking the supply of oxygen which results in the extinguished fire

Answer 2

CO2 is able to control fires because CO2 being heavier than oxygen, covers the fire like blanket and also brings down the temperature of fuel. Since, contact between the fuel and oxygen is cut off the fire comes under control.