Sunday, March 15, 2015

Which is better extinguisher of fire - cold water or hot water?

hot water is better for  extinguishing fire. The reason is that hot water readily boils and it takes away the heat for evaporation . Coldc water on the other hand needs to be raised to 100 degree celsius before it can boil.But the heat absorbed when the hot water boils is very much greater than the amount of heat cold water takes to raise temperature to 100 degree celsius. Therefore hot water extinguishes fire more readily

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