Question

Can anyone write the summary of Fire:Friend & Foe chapter? Please help me.

Answer 1

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.

Answer 2

Early man must have found fire to be dangerous and frightening. Fire must have been a mystery for an early man but it is known today that it is a result of chemical reaction. ... To make fire fuel, heat and oxygen is needed. Wood, coal, gas are fuel, oxygen is available in air.