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प्रश्न
Name the substance which makes water permanently hard.
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
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 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.
Select the correct answer from the choice given in the options.
A substance which causes 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?
The pleasant taste of drinking water is due to the presence of a dissolved substance which includes air, CO2, and minerals.
What is soft water?
Which water is hard?
Which water is soft?
1000 g aqueous solution of CaCO3 contains 10 g of calcium carbonate. Hardness of the solution is ______.
