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प्रश्न
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
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उत्तर
Air Pollution : Air is polluted by natural processes like volcanic eruption, crop pollination, etc. mostly it is polluted by human activities like burning of coal, wood, diesel oil, kerosene, petrol etc.
Fossil fuels contain sulphur and nitrogen as impurities. When fuels bum these substances combine with air to produce gasses like sulphur dioxide, nitrogen oxide and hydrogen sulphide. They cause many serious respiratory problems. They can destroy the ozone layer, which protects us from the ultra violet radiations of the Sun. They also cause acid rain, which damages crops and buildings.
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संबंधित प्रश्न
Statement given below is incorrect. Write the correct statement :
Carbon dioxide gas allows the earth to radiate out heat rapidly.
Briefly state the importance of Nitrogen.
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
List uses of oxygen.
______ is the active component of air.
_______ can be seen moving in a beam of sunlight in a dark room.
All living things use oxygen for breathing.
Air contains a small amount of CO2, Water vapour, and some other gases like ______, etc.
The amount of water vapour in the air is more in windy places than in other areas.
Nitrogen is about two times more soluble in water than oxygen.
