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Which of the following substances cause ...

Which of the following substances cause permanent hardness of water

A

`CaCl_(2)`

B

`Ca(HCO_(3))_(2)`

C

`CaCO_(3)`

D

All of these

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The correct Answer is:
A
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NARAYNA-HYDROGEN & ITS COMPOUCDS-C.U.Q HYDROGEN
  1. The temporary hardness of water is due to the presence of

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

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

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  4. Calgon (a water softener) is :

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  5. The temporary hardness of water due to calcium bicarbonate can be remo...

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  6. The chemical formula of Zeolite is…….

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

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  8. The formula of exhausted pemutit is

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  9. Permanent hardness in water cannot be cured by :

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

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  11. Exhausted anion exchange resin is resin by using solution of moderatel...

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

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  13. Both temporary and permanent hardness is removed on boiling with

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  14. The composition of electrolyte for the manufacture of calcium by elect...

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  15. In the laboratory, H(2)O(2) is prepared by the action of

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  16. The action of H(2)SO(4) on KI gives I(2) and H(2)S Calculate the volum...

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  17. H(2)O(2) is :

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  18. What is the conc. Of H(2)O(2) obtained by auto oxidation process?

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  19. Write one chemical reactions for the preparation of D(2)O(2).

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  20. Which of the following does not form a stable hydrate on addition of H...

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