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प्रश्न
Name the substance which makes water permanently hard.
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उत्तर
Sulphates and chlorides of magnesium and calcium
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संबंधित प्रश्न
What causes the temporary and permanent hardness of water?
What do you understand by
Temporary hard water
What are the causes for:
Temporary hardness
Name the substance which makes water temporarily hard
How will you distinguish between temporary hard water and permanent hard water?
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 _____.
Soap lathers well in hard water.
What are the causes of temporary hardness and permanent hardness of water?
Which water is hard?
