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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
The gases which cause acid rain are
पर्याय
sulphur dioxide and oxygen
nitrogen and oxygen
carbon dioxide and water vapour
nitrogen dioxide and sulphur dioxide
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उत्तर
nitrogen dioxide and sulphur dioxide
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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 observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
Discuss harmful effects of greenhouse effect.
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
State four steps to be taken to control air pollution.
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
What will happen if the amount of water vapour in the air increases.
With whom should I pair up?
| Group A | Group B | ||
| (1) | Air | (a) | Excretion |
| (2) | Water | (b) | Scattering of light |
| (3) | Soil | (c) | Plasticity |
State the meaning of the term 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 |
What should be done if the clothes of a person catch fire accidentally? Why?
