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प्रश्न
Permanent hardness of water is due to the presence of _______.
विकल्प
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
What do you observe when Washing soda is exposed to air ?
Suggest one method for the removal along with the reaction for permanent hardness of water.
What do you understand by
Soft water
Give balanced equation to show how temporary hardness in water can be removed by boiling.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Give two natural sources of hard water.
Temporary hardness of water can be removed by ________ of water.
What is permanent hardness of water? How can it be removed?
What is the reason for the hardness of water?
Temporary hardness of water can be removed by
