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BITSAT2015ChemistryHydrogenActual

Which one the following removes temporary hardness of water?

Options

  1. ASlaked lime
  2. BPlaster of Paris
  3. CEpsom
  4. DHydrolith

Correct answer

A. Slaked lime

Step-by-step solution

This method is known as Clark's process. In this method temporary hardness is removed byadding lime water or milk of lime. Ca ( OH )₂+ Ca ( HCO ₃ )₂ ppt . 2 CaCO ₃ +2 H ₂ O

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