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प्रश्न
What is global warming?
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उत्तर
The increased greenhouse effect is caused due to increase in air pollutants and it results in the average increase in temperature of the atmosphere. This is called Global warming.
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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 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:
carbon dioxide
How is air useful to windmills?
Tick (√) the correct alternative from the choice given for the following statement.
The substance which accelerates the speed of a reaction without itself undergoing any change is called
Describe a simple experiment with the help of a diagram to show that Air occupies space
What will happen if the amount of water vapour in the air increases.
How is light scattered by the air?
State the meaning of the term Air
The composition of air is always exactly the same.
