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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
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
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 |
Give two uses of the following component present in air:
water vapour
Name two air pollutants which cause global warming.
Name the following.
Inert gases in the air
Why is it said that-
Air is a homogeneous mixture of various gases.
Name the important scientists and their studies which led to the discovery of the components of air.
The layer of air around the earth is known as ______.
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Why did the tiny bubbles appeared?
