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The permanent hardness of water is due t...

The permanent hardness of water is due to the presence of

A

Sulphates and Chlorides of Ca and Mg

B

Carbonates of Ca and Mg

C

Bicarbonates of Ca and Mg

D

Phosphates of Ca and Mg

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

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

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

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  5. Calgon (a water softener) is :

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

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  7. The chemical formula of Zeolite is…….

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

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  9. The formula of exhausted pemutit is

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  10. Permanent hardness in water cannot be cured by :

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

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

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

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

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

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

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

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

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

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