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What are the uses of the various gases i...

What are the uses of the various gases in air?

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TARGET PUBLICATION-PROPERTIES OF NATURAL RESOURCES -SOLVED
  1. Why is it said that Water is universal solvent.

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  2. Why is it said that There is no alternative to water for cleaning purp...

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  3. What are the uses of the various gases in air?

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  4. Is there any atmospheric pressure on the moon?

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  5. What change takes place in a balloon on filling air in it ?

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  6. Use your brain power! What would happen if all the air surrounding us ...

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  7. Use your brain power! Will sound the heard in space?

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  8. Take a bucket of water . Drop given articles in it . Make separate lis...

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  9. Take some water in a pot and add few pieces of ice to it . Observe wha...

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  10. Keep a glass full of water in the freezer for five to ten minutes . Th...

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  11. Use your brain power! In cold countries how do aquatic animals remain ...

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  12. Take two big glasses of water . Add 4-5 spoonfuls of salt to the water...

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  13. Why is it easier to swim in the sea than in a wall or a lake ?

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  14. Use your brain power! Why is it easy to plough sandy soil?

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  15. Use your brain power! What is the water holding capacity of silt soil?

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  16. Oral work : In which state does water occur below 4⁰C ?

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  17. Oral work : Why is water known as the universal solvent ?

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  18. Oral work : What is the pH of alkaline soil ?

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  19. Oral work : Name the leguminous crops cultivated to restore the fert...

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  20. Oral work : Mention the tests used to find out the characteristics o...

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