Question

Forest fire produces a lot of air pollution. write in brief about the reasons of forest fires?

Answer 1

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A substance which reacts with oxygen giving heat is called a combustible substance. Which, one of the following is a combustible substance?(a) iron nail(b) glass(c) stone piece(d) woodWhich one of the following has the highest calorific value?(a) kerosene(b) biogas(c) LPG(d) petrolMagnesium ribbon on burning in air produces(a) magnesium oxide, water and light(b) magnesium oxide and heat(c) magnesium oxide, heat and light(d) magnesium oxide, water and heatWhich of the following is not a combustible substance?(a) camphor(b) glass(c) straw(d) alcoholThe substance that does not burn with flame is(a) LPG(b) camphor(c) dry grass(d) charcoal

Answer 2

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• Causes for Forest fire

=> Lightning.

=> Storm.

=> Glass Pieces which will focus the rays of the sun in a particular direction which might lead to fire.

=> Sun's radiational waves which burns the dry or fresh leaves to form fire.

=> Leaves or dey leaves rubbing together to form sparks which might turn to fire.

=> Camp fires - when camp fires are not completely put off when the camp fire is over.

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