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प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Atmospheric nitrogen is directly absorbed by the plants to form plant proteins.
पर्याय
True
False
उत्तर
False:
Atmospheric nitrogen cannot be directly absorbed by the plants to form plant proteins.
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संबंधित प्रश्न
Match the following :
| Column A | Column B |
| (a) Global warming | 1. Hydrated ferric oxide |
| (b) Acid rain | 2. Manganese dioxide |
| (c) Rust | 3. Carbon dioxide |
| (d) Catalyst | 4. Methane |
| (e) Photosynthesis | 5. Nitrogen Dioxide |
Discuss harmful effects of greenhouse effect.
Give two uses of the following component present in air:
nitrogen
Name two air pollutants which affect our health.
State four steps to be taken to control air pollution.
Fill in the blank
Polluted air is harmful to ____.
The capacity of air to hold moisture depends upon the ______ of the air.
Water does not have a ______ but has definite ______ and ______.
Explain the term ‘air pollution’, with reference to air quality. State the sources of a few main pollutants.
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 |
