Chemistry 5070 · O Level · Water

Water — practice question

Domestic water is treated before it reaches homes. Three treatments are given: sedimentation and filtration; treatment with chlorine; treatment with carbon. Which row indicates the purpose of these treatments?

  • Asedimentation and filtration: kills microbes; treatment with chlorine: removes solids; treatment with carbon: removes unpleasant tastes and odours
  • Bsedimentation and filtration: removes solids; treatment with chlorine: kills microbes; treatment with carbon: removes unpleasant tastes and odours
  • Csedimentation and filtration: removes solids; treatment with chlorine: removes unpleasant tastes and odours; treatment with carbon: kills microbes
  • Dsedimentation and filtration: removes unpleasant tastes and odours; treatment with chlorine: kills microbes; treatment with carbon: removes solids

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