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Calculate the volume of oxygen and nit...

Calculate the volume of oxygen and nitrogen present 250 l of air.

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The correct Answer is:
195 l, 52.5 l
Volume percentage of nitrogen in air is 78%
`rArr` 100 l of air contains 78 l of nitrogen
250 l of air contains `(78xx250)/100`=195 l of nitrogen
Volume percentage of oxygen in air is 21%
`rArr` 100 l of air contains 21 l of oxygen
250 l of air contains `(250xx21)/100`=52.5 l of oxygen .
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PEARSON IIT JEE FOUNDATION-AMAZING AIR-Test Your Concepts (Short Answer)
  1. Write some uses of air.

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  2. Explain the importance of water vapour present in the atmosphere.

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  3. Calculate the volume of oxygen and nitrogen present 250 l of air.

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  4. Name the products formed in the following. Carbon + Oxygen to

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  5. Name the products formed in the following. Glucose + Oxygen to

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  6. Name the products formed in the following. Phosphorus pentoxide + W...

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  7. The composition of air in terms of percentage of its various component...

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  8. The composition of air in terms of percentage of its various component...

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  9. The composition of air in terms of percentage of its various component...

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  10. How is the balance of oxygen in atmospheric air maintained ?

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  11. Both the active component and the inactive component of play importan...

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  12. Gas X is the heaviest component of natural air. Identify X

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  13. Gas X si the heaviest component of natural air. (a) Identify...

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  14. The mountaineers carry oxygen gas cylinders with them while climbing h...

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  15. Thought air contains only about 0.03% of carbon dioxide , it is a very...

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  16. The following two experiments are conducted to prove the release of ca...

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  17. What is the observation when air comes in contact with a cool surface ...

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  18. Identify the mistake(s) in the diagrams and give justification.

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  19. What inference can be drawn from the above diagrams?

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  20. Write the chemical name of the substance taken in the test tube.

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