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What are the various constituents of air...

What are the various constituents of air ? Write their uses.

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NAVNEET PUBLICATION-NATURAL RESOURCES-AIR, WATER AND LAND-QUESTION BANK
  1. Why is it said that ………?Water is life.

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  2. How is sea or ocean water useful to us, even though it is salty?

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  3. Explain with the help of a diagram how soil is formed.

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  4. Why is there a shortage of water even though it occupies about 71% of ...

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  5. What are the various constituents of air ? Write their uses.

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  6. Why are air, water and land considered to be valuable natural resource...

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  7. Write a short note on 'Air pollution'.

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  8. What should we always remember while using water ?

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  9. Which layers are seen in land? Explain it in brief.

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  10. Write short note on Indian Meteorological Department.

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  11. Label the following diagram correctly with proportion of various gase...

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  12. Label the layers of land in the given diagram.

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  13. What would have happened if there were no air on the earth?

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  14. If all the microbes in the soil get destroyed, then what will happen?

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  15. The number of vehicles and factories in your surroundings increases.

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  16. What will happen if - The total supply of potable water is finished.

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  17. Give the uses of nitrogen gas.

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  18. How is living world benefited due to atmosphere ?

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  19. Where do ozone depleting gases come from ?

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  20. Which are rodent animals that help in soil formation ?

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