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प्रश्न
What is air pollution?
एका वाक्यात उत्तर
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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
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
Define the following:
Respiration
How is air useful to agriculture?
Mention five causes of air pollution.
State four steps to be taken to control air pollution.
Why is it said that-
Air is a homogeneous mixture of various gases.
What will happen if the amount of water vapour in the air increases.
State whether the following statement is true or false.
The pressure exerted by air is called atmospheric pressure.
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
