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प्रश्न
Name two air pollutants which affect our health.
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उत्तर
Two air pollutants that affect our health are:
- DUST
- SMOKE
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संबंधित प्रश्न
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. |
(a) Oxygen |
| 2. A gas used for filling weather observation balloons. | (b) carbon acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphur acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
What do you observe when a burning candle is covered with an inverted jar.
Give two uses of the following component present in air:
water vapour
State two similarities and two differences between respiration and burning.
Name two air pollutants which cause global warming.
What is meant by ozone depletion?
Answer in your own words.
What are the various constituents of air? Write their uses.
State whether the following statement is true or false.
The pressure exerted by air is called atmospheric pressure.
What is the importance of air in transmission of sound?
The layer of air around the earth is known as ______.
