Advertisements
Advertisements
प्रश्न
What are the causes for
Permanent hardness
Advertisements
उत्तर
The presence of sulphates and chlorides of magnesium and calcium makes water permanently hard.
APPEARS IN
संबंधित प्रश्न
What causes the temporary and permanent hardness of water?
Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.
What are the causes for:
Temporary hardness
Name the substance which makes water permanently 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?
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 _____.
Name or state the following:
A substance added to remove both temporary and permanent hardness in water.
Soap lathers well in hard water.
Give a reason for the following.
Hard water is not good for washing utensils.
What are the causes of temporary hardness and permanent hardness of water?
Why does hard water not form lather with soap?
What is soft water?
Which water is hard?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Concentration of the solution is ______.
