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What causes the temporary and permanent ...

What causes the temporary and permanent hardness of water?

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V PUBLICATION-HYDROGEN-QUESTION BANK
  1. Complete the following chemical reactions. i) PbS(s)+H2 O2(aq) rarr i...

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

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  3. What causes the temporary and permanent hardness of water?

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

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  5. Write chemical reactions to show amphoteric nature of water.

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  6. Write chemical reactiöns to justify that hydrogen peroxide can functio...

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  7. What is meant by 'demineralished water '?

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  8. Is demineralised or distilled water useful for drinking purposes? If n...

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  9. Describe the usefulness of water in bíosphere and biological systems.

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  10. What properties of water make it useful as a solvent?

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  11. Knowing the properties of H2O and D2O . Do you think that D2O can be u...

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  12. What is the difference between the terms 'hydrolysis' and 'hydration'?

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  13. How can saline hydrides remove traces of water from organic compounds?

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  14. What do you expect the nature of hydrides formed by elements of atomic...

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  15. Do you expect different products in solution when aluminium (III) chlo...

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  16. How does H2O2, behave as a bleaching agent?

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  17. What do you understand by the terms (i) hydrogen economy (ii) hydrogen...

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  18. Water a compound of hydrogen is .unique in many of its.properties.Wate...

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  19. i) Rain water and séa, water differ in their behaviour towards soap. G...

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  20. Cite two examples of metallic oxides which are acidic as well as basic...

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