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Chemistry · Oct / Nov 2017 · Paper 12 · Question 35

5070Water

Why is chlorine added to the water supply?

  1. AChlorine is used to desalinate the water.
  2. BChlorine kills bacteria that may be present in the water.
  3. CChlorine precipitates solids that may be present in the water.
  4. DChlorine removes tastes and odours from the water.

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Correct answer: B. Chlorine kills bacteria that may be present in the water.

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