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प्रश्न
Answer in your own words.
What are the various constituents of air? Write their uses.
विस्तार में उत्तर
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उत्तर
| Constituents of air | Uses |
| 1. Nitrogen | Required in building proteins. Useful in the production of ammonia. Used in airtight packaging of food products. |
| 2. Oxygen | Necessary for respiration and combustion. |
| 3. Carbon dioxide | Used by plants to make their food. Used in fire extinguishers. |
| 4. Argon | Used in electric bulbs. |
| 5. Helium |
Used for obtaining low temperatures. |
| 6. Neon | Used in decorative lights and street lighting. |
| 7. Krypton | Used in fluorescent tubes. |
| 8. Xenon | Used in flash photography. |
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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 |
Give two uses of the following component present in air:
nitrogen
Define the following:
Respiration
How is air useful to agriculture?
What is air pollution?
Mention five causes of air pollution.
Name two air pollutants which cause global warming.
Give a brief account of the discovery of air and the scientists involved.
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
______ is important for all living creatures.
