Question

Fire: friend and foe. Justify the title in your own words.​

Answer 1

Answer:

Early Man and Fire

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. When oxygen present in air combines with carbon and hydrogen present in a fuel, energy is released in form of heat and light and this is what fire is. To make fire fuel, heat and oxygen is needed. Wood, coal, gas are fuel, oxygen is available in air. But to cause fire heat is essential. A piece of paper doesn’t catch fire until that is supplied to it. Every fuel burns at a particular temperature which is also called ‘flash point or kindling temperature.