Differentiate between temporary hard water and permanent hard water.

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Solution

Temporary hardness Permanent hardness
It is caused due to dissolved Ca or Mg bicarbonates It is caused due to the dissolved Ca or Mg salts of chlorides or sulphates
It can be easily removed by boiling or treatment with lime. To remove the permanent harness, usually, complex processes such as zeolite or permutit methods are required.

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Temporary hardness	Permanent hardness
It is caused due to dissolved Ca or Mg bicarbonates	It is caused due to the dissolved Ca or Mg salts of chlorides or sulphates
It can be easily removed by boiling or treatment with lime.	To remove the permanent harness, usually, complex processes such as zeolite or permutit methods are required.