Question 11 MarkMention any four sources of soil pollution.AnswerThese are industrial wastes, domestic waste, chemical fertilizers and pesticides.View full question & answer→
Question 21 MarkName two heavy metals from industries that pollute water.AnswerHeavy metals are Lead and Mercury.View full question & answer→
Question 31 MarkName three gases emitted during burning of garbage.AnswerThese are Carbon dioxide, Sulphur dioxide, Nitrogen oxides.View full question & answer→
Question 41 MarkWhat is known as smog? What harm is done by smog especially in winter?AnswerSmog means smoke + fog. In winter season smog is responsible for many accidents due to the obstacle in visibility.View full question & answer→
Question 51 MarkName one industry which pollutes the atmosphere with gaseous as well as with particulate matter.AnswerAutomobile industry.View full question & answer→
Question 61 MarkWhat are natural sources of air pollution?AnswerNatural sources are volcanic eruptions, sand, dust, forest fires etc.View full question & answer→
Question 71 MarkHow are brick kilns a source of gases and particulate matter that cause air pollution?AnswerBrick kilns produce huge amount of Carbon oxides, smoke, and dust, etc.View full question & answer→
Question 81 MarkHow much are the automobiles responsible for air pollution ?AnswerAutomobiles are mainly responsible for 80% air pollution, emitting Carbon monoxide, Hydrocarbons, Nitrogen monoxide etc.View full question & answer→
Question 91 MarkWhat kind of solid and liquid pollutants does the offshore drilling produce?AnswerDrilling produces dust, stones, etc and crude oil spills pollute largely the oceanic water and disturb marine life.View full question & answer→
Question 101 MarkHow do the radioactive wastes get into the water bodies?AnswerWastes produced by nuclear power stations nuclear weapons/testing, research laboratories, and hospitals, are the main radioactive wastes which pollute the water bodies.View full question & answer→
Question 111 MarkWhy is it harmful to dispose of household detergents in water bodies?AnswerDetergents contain some phosphates which are helpful to 1 produce algae and aquatic weeds which pollute the water.View full question & answer→
Question 121 MarkWhat special kind of air pollution do the brick kilns produce?AnswerDust and smoke are the main elements produced by the brick kilns to pollute the air.View full question & answer→
Question 131 MarkHow does the use of automobiles cause air pollution?AnswerAutomobiles produce large amount of CO, hydrocarbons, oxides and suspended particulate matter and cause air pollution.View full question & answer→