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Water. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceWater.2 Marks
Question
Write a note on ion-exchange.
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Answer

  1. Another method used to remove the hardness of water is to pass it through a column of ion-exchange resins where calcium and magnesium ions get replaced by sodium ions.
  2. This converts hard water into soft water.

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