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KCET2021ChemistryHydrogen

Permanent hardness cannot be removed by

Options

  1. Ausing washing soda
  2. BCalgon's method
  3. CClark's method
  4. Dion exchange method

Correct answer

C. Clark's method

Step-by-step solution

Permanent hardness cannot be removed by Clark's method. This method is used for removing temporary hardness.

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