How will you distinguish between fire extinguishing action of water and CO2? [3 MARKS]
Working of each : 1.5 Marks each
Water helps to extinguish fire in two ways:- it brings the temperature of the combustible material below its ignition temperature and the water vapour formed due to the heat of fire cuts the supply of oxygen.
Carbon dioxide is highly volatile. So, it immediately vaporises to cut off the supply of air. In the absence of supporter of combustion, fire is extinguished.