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Question
Permanent hardness in water cannot be cured by ______.
Options
Treatment with washing soda.
Boiling
Calgon's method
Ion exchange method
MCQ
Fill in the Blanks
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Solution
Permanent hardness in water cannot be cured by Boiling.
Explanation:
Boiling removes only temporary hardness caused by \[\ce{HCO^-_3}\] (bicarbonate) ions.
shaalaa.com
Water - Temporary Hardness of Water
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