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What happens when hard water containin...

What happens when
hard water containing `CaSO_(4)` is treated with calgon.

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ICSE-HYDROGEN-SHORT ANSWER TYPE QUESTIONS
  1. Describe the auto-oxidation process for the manufacture of H(2)O(2).

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  2. How is an aqueous solution of hydrogen peroxide concehtrated to get 10...

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  3. What happens when hard water containing CaSO(4) is treated with calg...

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  4. What happens when ozone is passed in an aqueous solution of kl.

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  5. What happens when acidified ferrous sulphate solution is treated wit...

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  6. What happens when H(2)O(2) reacts with chlorine.

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  7. What happens when H(2)O(2) is treated with acidified potassium perm...

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  8. Distinguish clearly between hard and soft water

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  9. Distinguish clearly between temporary and permanent hardness.

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  10. Describe the structure of hydrogen peroxide.

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  11. How is hydrogen peroxide manufactured from H(2)SO(4) ? Describe the pr...

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  12. What precautions should be observed for the safe storage of hydrogen p...

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  13. Describe some important oxidising properties of hydrogen peroxide

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  14. Describe some important reducing properties of hydrogen peroxide

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  15. Why does H(2)O(2) act both as an oxidising and a reducing agent?

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  16. What do you understand by the volume strength of H(2)O(2) ? Illustrate...

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  17. Mention some important uses of hydrogen peroxide

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  18. What is understood by 'Water gas shift reaction' ? Discuss· its use fo...

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  19. Complete the following reactions : CaO(s)+H(2)O(l)to

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  20. Complete the following reactions : Na(2)O(s)+H(2)O(l)to

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