The one that is not suitable for the removal of permanent hardness of water is : (A) Treatment with — JEE Mains Chemistry Past Papers Chemistry Question
Question
The one that is not suitable for the removal of permanent hardness of water is : (A) Treatment with sodium carbonate (B) Ion–exchange method (C) Calgon's method (D) Clark's method
Answer: D
💡 Solution & Explanation
Clark's Method is used to remove temporary hardness by using lime water (or) Ca(OH)2. | JEE MAIN-2020 | DATE : 05-09-2020 (SHIFT-2) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 7
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