Advertisements
Advertisements
प्रश्न
How will you distinguish between temporary hard water and permanent hard water?
Advertisements
उत्तर
Hard water contains dissolved magnesium and calcium ions. Temporary hardness is caused by dissolved calcium hydrogen carbonate (which is removed by boiling). Permanent hardness is caused by dissolved calcium sulfate (which is not removed by boiling).
APPEARS IN
संबंधित प्रश्न
Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.
What do you understand by
Temporary hard water
What do you understand by
Permanent hard water
What are the causes for
Permanent hardness
Name the substance which makes water temporarily hard
Name the substance which makes water permanently hard.
Name or state the following:
A substance added to remove both temporary and permanent 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?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Concentration of the solution is ______.
