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Question
The one that is NOT suitable for the removal of permanent hardness of water is ______.
Options
Clark's method
Ion-exchange method
Calgon's method
Treatment with sodium carbonate
MCQ
Fill in the Blanks
Solution
The one that is NOT suitable for the removal of permanent hardness of water is Clark's method.
Explanation:
Clark's method is used to remove temporary hardness from water by using lime water (or) Ca(OH)2.
shaalaa.com
Common Ion Effect
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