Question

i need summary of fire friend and foe​

Answer 1

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$<b>Fire is a boon if it is kept under control but can be dangerous if it goes out of it. It is used in our house daily for cooking food, burning candles and so on, but if it goes out of control it can cause damage to life, houses and even forests. Fire can be controlled by taking away any three of the things required for burning it. It can be stopped immediately by taking away the fuel.</p><p></p><p>It can also be controlled by cutting the oxygen supply, for this many a times blankets are thrown over burning objects. Another way is to reduce the flash temperature; this can be done by spraying water which lowers down the temperature. However, water cannot be used to put out on electrical fires or an oil fire. Carbon dioxide extinguisher is the best way to control electrical fire.$

Answer 2

Summary

Fire is the result of a chemical reaction. When oxygen in the air combines with carbon and hydrogen, the reaction takes place. Three things are needed to make fire: fuel, oxygen and heat. The most common fuels are wood, coal, cooking gas and petrol. The particular temperature at which the fuel begins to burn is called the “flash point” or kindling temperature of the fuel. Fire is a good servant but a very cruel master. It is useful as long as it is under control. We use some form of fire to cook food, to warm our homes and to produce electricity. But uncontrolled fire burns homes and forests, and also kills people.

We can put out the fire in three ways. Firstly by taking the fuel away, secondly by stopping the supply of oxygen and thirdly by removing the heat or bringing down the temperature.

Water spray cannot put out the oil fire. In fact it can prove dangerous. Water can carry burning oil with it and thus spread fire. Likewise water should not be used to fight electric fire, because it may cause electric shock.

Today there are firefighting squads in every town. Firemen are highly trained persons. The discovery of fire led to a settled life. Fire is still worshipped in many parts of the world.