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प्रश्न
Permanent hardness of water is due to the presence of _______.
पर्याय
sulphates and chlorides
dust particles
carbonates and bicarbonates
other soluble particles
उत्तर
Permanent hardness of water is due to the presence of sulphates and chlorides.
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संबंधित प्रश्न
Give two examples for Efflorescent substance.
Define the Soft water.
State the disadvantages of using hard water.
Explain the permutit method for softening hard water.
Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Explain the meaning of the terms – hard water & soft water.
Temporary hardness of water can be removed by ________ of water.
What are the methods of removing hardness of water?
What is permanent hardness of water? How can it be removed?
