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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 causes the temporary and permanent hardness of water?
What are the causes for
Permanent hardness
Name the substance which makes water temporarily hard
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 from water without using a chemical compound?
Both temporary & permanent hardness in water can be removed by addition of washing soda. Give balanced equations for the same.
State what are synthetic detergents. Explain experimentally how you will determine the advantage of synthetic detergents over soap using a sample of hard water.
Select the correct answer from the choice given in the options.
A substance which causes hardness in water _____.
What are the causes of temporary hardness and permanent hardness of water?
Which water is soft?
