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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
Name the substance which makes water temporarily 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 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?
Select the correct answer from the choice given in the options.
A substance which causes hardness in water _____.
Match the following.
| Universal solvent | Water pollutant |
| Hard water | Kills germs |
| Boiling | Ozonisation |
| Sterilization | Water |
| Sewage | Stomach ailments |
Why does hard water not form lather with soap?
What is soft water?
Which water is soft?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Concentration of the solution is ______.
