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प्रश्न
What are the causes for
Permanent hardness
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उत्तर
The presence of sulphates and chlorides of magnesium and calcium makes water permanently hard.
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संबंधित प्रश्न
What do you understand by
Temporary hard water
What are the causes for:
Temporary hardness
Name the substance which makes water temporarily hard
Name the substance which makes water permanently hard.
How will you distinguish between temporary hard water and permanent hard water?
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you remove temporary hardness from water without using a chemical compound?
Give a reason for the following.
Hard water is not good for washing utensils.
What are the causes of temporary hardness and permanent hardness of water?
Which water is hard?
Which water is soft?
