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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Subjects
Science CBSE
Class 8
Pollution of air and water
Air and water pollution

2. Questions on Effects of Air Pollution

Exercise condition:

5 m.

Choose the correct answer from the components given below:

1. Air pollution is mostly caused by ___________, _____________________ and _____________.

Gases from volcanic eruption, Sea Water, garbage
Factories , Automobile exhausts , Burning of firewood as well as dung cakes.
Gases from volcanic eruption, Drinking, Cutting trees
Smoking, Cleaning , Cutting trees

2. The components in smog are_____________.

Smoke, Carbon Dioxide, Air
Water vapour, Smoke, Fog
Water, Smoke
Smoke, Fog, Air pollutants like Nitrogen dioxide, Carbon Dioxide and Sulphur Dioxide.

3. When the air is contaminated with unwanted substances which causes harm to both the living and non-living things then it is called____________________.

Ozone Depletion
Water Pollution
Air Pollution
Pollution

4. Harmful substances like smoke , \(CO_2\),\(CO\), \(NO_2\) which contaminate the air causing _______________ are called _______________.

contamination, contaminants
substance pollution, pollutants
air pollution, air pollutants.
soil Pollution, pollutants

5.Air pollution is caused by_______________,_______________,________________ and _____________.

smoke from vehicles, garbage from households, deforestation, growing crops
water vapour, gases from volcanoes, smoke from cars , sewage water
smoke from factories, sewage water, deforestation, effluents from industries
smoke from volcanic eruptions, exhaust fumes from automobiles , smoke from factories , burning of dung cakes

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