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What are the causes for Temporary har...

What are the causes for
Temporary hardness

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What are the causes for Permanent hardness

The method used to remove temporary hardness of water is:

Compound X is used for removal of temporary hardness of water. It dissolves in water to form alkaline solution Choose the correct statements for 'X'

What do you understand by the hardness of water and what are the causes of hardness ?

State two methods to remove temporary hardness.

Give balanced equations to show how - a] Temporary hardness enters into water.

Give balanced equations to show how - (b) Temporary hardness in water can be removed by boiling

Assertion (A) : Temporary hardness in water is due to the presence of chlorides of magnesium. Reason (R) :Temporary hardness is removed by Clark's method.

Assertion (A) : Temporary hardness in water is due to the presence of chlorides of magnesium. Reason (R) :Temporary hardness is removed by Clark's method.

What do you understand by softening of hard water? How is the water having temporary hardness softened ?

ICSE-WATER-EXERCISE 3(C)
  1. What is the importance of dissolved impurities in water?

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  2. State two ways, by which a saturated solution can be changed to unsatu...

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  3. What do you understand by Soft water

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  4. What do you understand by Hard water

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  5. What do you understand by Temporary Hard water

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  6. What do you understand by Permanent hard water.

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  7. What are the causes for Temporary hardness

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  8. What are the causes for Permanent hardness

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  9. What are the advantages of (i) soft water (ii) hard water?

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  10. What are stalagmites and stalactites? How are they formed ?

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  11. Name the substances which give water (i) temporary hardness (ii) perma...

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  12. Give equations to show what happens when temporary hard water is boi...

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  13. Give equations to show what happens when temporary hard water is tre...

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  14. State the disadvantages of using hard water.

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  15. What is a soap, what for is it used ?

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  16. What is the advantage of a detergent over soap ?

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  17. Why does the hardness of water render it unfit for use in a (i) boiler...

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  18. Explain with equation, what is noticed when permanent hard water is tr...

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  19. What happens when hard water is treated with washing soda?

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  20. What is permutit method, how can it be used for softening hard water?

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