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Methods of Removing Hardness MCQs Quiz Online PDF Download eBook

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MCQs on Methods of Removing Hardness PDF Download eBook

MCQ: Addition of washing soda removes

  1. softness of water
  2. temporary hardness of water
  3. permanent hardness of water
  4. hydrogen from water

C

MCQ: Temporary hardness can be removed by adding

  1. lime
  2. carbon
  3. oxygen
  4. slaked lime

D