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प्रश्न
Answer in your own words.
What are the various constituents of air? Write their uses.
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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. |
संबंधित प्रश्न
What is greenhouse effect?
How is greenhouse effect produced?
State two similarities and two differences between respiration and burning.
Give a brief account of the discovery of air and the scientists involved.
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
What will happen if the number of vehicles and factories in your surroundings increases?
How is light scattered by the air?
Name the important scientists and their studies which led to the discovery of the components of air.
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
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?
