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Percentage of water present in oceans...

Percentage of water present in oceans

A

2.04

B

6.2

C

94.8

D

97.3

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The correct Answer is:
D
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NARAYNA-HYDROGEN & ITS COMPOUNDS-CONCEPTUAL QUESTIONS
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  2. Which metals are used for storage of hydrogen

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  3. Percentage of water present in oceans

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  4. In ice each oxygen is surrounded by four oxygen atoms in manner.

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  7. The temporary hardness of water is due to the presence of

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  8. The permanent hardness of water is due to the presence of

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  9. Which of the following substances cause permanent hardness of water

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  10. The formula of Calgon is :

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  11. Temporary hardness of water can be removed by adding

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  12. The chemical formula of Zeolite is…….

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  13. When Zeolite (Hydrated sodium Alumininum silicate) is treated with har...

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  14. The formula of exhausted pemutit is

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  15. Permanent hardness of water cannot be removed by

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  16. Exhausted anion exchange resin is revived by using solution of

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  17. Exhausted cation exchange resin is regenerated by using solution of mo...

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  18. De-ionized water is prepared by the following method :

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  19. Both temporary annd permanent hardness can be removed by using

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