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प्रश्न
What do you understand by
Permanent hard water
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उत्तर
Water containing sulphates and chlorides of magnesium and calcium is called permanent hard water.
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संबंधित प्रश्न
What are the causes for:
Temporary hardness
What are the causes for
Permanent hardness
Explain with equation, what is noticed when permanent hard water is treated with
Slaked time
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you remove temporary hardness and permanent hardness from water using a chemical compound?
Both temporary & permanent hardness in water can be removed by addition of washing soda. Give balanced equations for the same.
Soap lathers well in hard water.
Give a reason for the following.
Hard water is not good for washing utensils.
Why does hard water not form lather with soap?
Which water is hard?
Which water is soft?
