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Discuss the principle and method of soft...

Discuss the principle and method of softening of hard water by synthetic ion- exchange resins.

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MODERN PUBLICATION-HYDROGEN-REVISION EXERCISES (Short Answer Questions)
  1. What causes the temporary and permanent hardness of water ?

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  2. Explain why hydrogen is best placed separately in the periodic table.

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  3. Discuss the principle and method of softening of hard water by synthet...

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  4. Describe the structure of the common form of ice.

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  5. Write chemical reactions to justifty that hydrogen peroxide can functi...

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  6. Complete the following reactions: (i) XeF2 + H2 to , (ii) XeF6 + Si...

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  7. What happens when H(2)O(2) is treated with (i) Acidified potassium (i...

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  8. The structure of hydrogen peroxide molecule is

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  9. Starting from sodium chloride, how will you proceed to prepare (i) sod...

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  10. Why is hydrogen peroxide stored in wax lined bottles?

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  11. Complete the following equations : (i) (NH4)2 S2 O8 + H2 O + MnSO4 r...

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  12. The structure of H2O2 is

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  13. What are metallic or interstitial hydrides? How do they differ from mo...

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  14. Describe some unusual properties of water.

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  15. How is heavy water prepared form normal water?

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  16. Write chemical reactions to show the amphoteric nature of water.

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  17. Hydrogen forms three types of bond in its compounds. Describe each typ...

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  18. Why conc. H2 SO4 cannot be used to dry hydrogen sulphide ?

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  19. What are advantages of using hydrogen as a fuel over gasoline or coal ...

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  20. What is heavy water ? How does it react with : (i) Sodium metal (i...

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