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Discussion :: Chemistry

  1. The method that cannot be used for removing permanent hardness of water is

  2. A.

     adding sodium carbonate

    B.

     distillation

    C.

     adding caustic soda

    D.

     boiling

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    Answer : Option D

    Explanation :

    Permanent hardness of water cannot be removed by simple physical methods like boiling, filtering and distillation.


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