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प्रश्न
Complete the statement given below by filling in the blank with the correct word/s from the word/s given below
____________ is an example of a pollutant present in the air.
पर्याय
helium
hydrogen sulphide
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उत्तर
Hydrogen sulphide is an example of a pollutant present in the air.
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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 observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
How is greenhouse effect produced?
Fill in the blank:
_____________ discovered the oxygen gas.
Mention five causes of air pollution.
Tick (√) the correct alternative from the choice given for the following statement.
The gases which cause acid rain are
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
Describe a simple experiment with the help of a diagram to show that Air has mass
Name the following.
Inert gases in the air
Name the following.
Gases that are harmful to the ozone layer
Explain the following observations very briefly
A firki does not rotate in a closed area.
