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प्रश्न
Name the following.
Gases that are harmful to the ozone layer
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उत्तर
Carbon tetrachloride
संबंधित प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Atmospheric nitrogen is directly absorbed by the plants to form plant proteins.
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 |
Why can’t we see air?
Give two uses of the following component present in air:
nitrogen
Give two uses of the following component present in air:
carbon dioxide
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
Name two air pollutants which cause global warming.
Tick (√) the correct alternative from the choice given for the following statement.
The gases which cause acid rain are
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Name a device which uses wind energy to generate electricity.
