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प्रश्न
What is air pollution?
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उत्तर
Air Pollution: “Mixing of UNWANTED and HARMFUL SUBSTANCES in the air is called AIR POLLUTION.”
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संबंधित प्रश्न
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
How is air useful to agriculture?
How is air useful to scooters and cars.?
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
State what do you understand by the term ‘air’. Explain its importance to mankind.
Describe a simple experiment with the help of a diagram to show that Air occupies space
What will happen if the amount of water vapour in the air increases.
What is global warming?
In a number of musical instruments, air plays an important role. Can you name some such instruments?
Explain the following observations very briefly
A firki does not rotate in a closed area.
