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JEE Main20205 Sep 2020Evening ShiftChemistryHydrogenActual

The one that is NOT suitable for the removal of permanent hardness of water is :

Options

  1. AClark's method
  2. BIon–exchange method
  3. CCalgon's method
  4. DTreatment with sodium carbonate

Correct answer

A. Clark's method

Step-by-step solution

Clark's Method is used to remove temporary hardness by using lime water (or) Ca ( OH ) 2

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