Water extinguishes most fires, but it does not extinguish petrol fire.

1.	Water extinguishes most fires, but it does not extinguish petrol fire. Explain.
Answer» Solution :Water EXTINGUISHES most fires by LOWERING down the temperature of the BURNING material. But in case of petrol FIRE, petrol being lighter than water, floats over water dn hence fire SPREADS instead of being extinguished.

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