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प्रश्न
What is greenhouse effect?
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उत्तर
The trapping of solar heat energy in earth’s atmosphere is called greenhouse effect.
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संबंधित प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Atmospheric nitrogen is directly absorbed by the plants to form plant proteins.
Discuss harmful effects of greenhouse effect.
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.
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
Water does not have a ______ but has definite ______ and ______.
With whom should I pair up?
| Group A | Group B | ||
| (1) | Air | (a) | Excretion |
| (2) | Water | (b) | Scattering of light |
| (3) | Soil | (c) | Plasticity |
The composition of air is always exactly the same.
______ is important for all living creatures.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
Air is a ______ of some gases.
