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Describe any two methods that may be use...

Describe any two methods that may be used to remove permanent hardness of water.

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The method used to remove temporary hardness of water is:

What causes the temporary and permanent hardness of water ?

In Clark's method the chemical used to remove hardness of water is

The Reagent which is commercially known as ‘calgon’ that is used to remove the permanent hardness of water in Calgon’s method. Find out the number of moles of calgon required to remove 12 moles of Ca^(2+) ion present in hard water.

What do you understand by hardness of water? Describe the permutit and calgon processes used to remove the permanent hardness of water.

Name the compound used to determine the hardness of water.

The reagent which is not used for removing the permanent hardness of water is :

Explain one method of removing permanent hardness.

The one that is NOT suitable for the removal permanent hardness of water is:

In zeolites & synthetic resin method which will be more efficient in removing permanent hardness of water :

ICSE-HYDROGEN-SHORT ANSWER TYPE QUESTIONS
  1. What do you understand by the temporary hardness and permanent hardnes...

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  2. What do you understand by softening of hard water? How is the water ha...

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  3. Describe any two methods that may be used to remove permanent hardness...

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  4. Describe calgon process used for softening of hard water.

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  5. Describe the permutit process used for water softening.

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  6. What is deionised water and how is it prepared ?

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

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  8. What is heavy water and how is it prepared?

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  9. What happens when heavy water is treated with Na

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  10. What happens when heavy water reacts with CaO

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  11. What happens when heavy water reacts with P(4)O(10)?

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  12. What happens when heavy water is treated with Al(4)C(3)

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  13. What happens when heavy water is treated with Ca(3)P(2)

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  14. What is deuterolysis? Give two examples.

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  15. What do you understand by the exchange reactions of heavy water ? Give...

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  16. Give a brief account of the biological and physiological effects of he...

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  17. Mention some important uses of heavy water.

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  18. Explain, why water has high boiling and melting points as compared to ...

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  19. Give one reaction each to show that water can act as (i) an acid, ...

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  20. Give one reaction each to show that water can act as a base, .

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