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प्रश्न
Suggest five measures to prevent air pollution.
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उत्तर
Five measures for the prevention of air pollution are:
- By using smokeless sources of energy, like solar energy and electrical energy, in place of conventional fossil fuels.
- By using filters for the. smoke coming out of the chimneys of factories and power plants.
- By using internal combustion engines in vehicles for complete and efficient burning of fuel.
- By locating industries away from residential areas.
- By growing more trees.
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संबंधित प्रश्न
Tick (√) the most appropriate answer.
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Name the following:
The product of respiration released in exhaled air, other than carbon dioxide.
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
Nitrogen is used in the food packaging industry because it _____.
_______ can be seen moving in a beam of sunlight in a dark room.
Composition of the component of air ______ from place to place.
“Air is not an elementary substance, but a composition”. Why?
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
Observe the picture given in figure carefully and answer the following questions.

- What is covering the nose and mouth of the police man?
- Why is he putting a cover on his nose?
- Can you comment on air quality of the place shown in the figure?
