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What is the chemical composition of calg...

What is the chemical composition of calgon ?

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ICSE-HYDROGEN-VERY SHORT ANSWER TYPE QUESTIONS
  1. Define hard water.

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  2. What are the causes for Temporary hardness

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  3. What are the causes for Permanent hardness

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  4. Can temporary hardness be removed simply by boiling the hard water?

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  5. Which chemical is used in softening of hard water by Clark's method?

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  6. Write the chemical formula of sodium zeolite.

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  7. What is the chemical composition of calgon ?

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  8. What type of functional groups are present in cation exchange resins?

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  9. How is the exhausted anion exchange resin regenerated ?

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  10. How many electrons are required for one fluorine atom to attain the oc...

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  11. Which gas is evolved when heavy water is made to react with calcium ca...

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  12. Name the product formed on dissolving SO(3) In heavy water.

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  13. What is oxygenated water ?

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  14. Name the organic compound used in the manufacture of H(2)O(2) by auto-...

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

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  16. What is the action of H(2)O(2) on litmus?

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  17. Why is hydrogen peroxide used as a bleaching agent ?

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  18. Give an example each of an ionic hydride and a covalent hydride.

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  19. Complete the following reactions : CuO(s)+H(2)(g)to

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  20. Complete the following reactions : CO(g)+H(2)(g)underset("catalyst")...

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