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What are the causes for Permanent har...

What are the causes for
Permanent hardness

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What are the causes for Temporary hardness

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

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A : Permanent hardness of water is due to the presence of chlorine or sulphates of Ca or Mg. R : Permanent hardness is removed by boiling

What causes the temporary and permanent hardness of water ?

Give an equation for the removal of permanent hardness in water.

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

Name the substances responsible for permanent hardness

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