Water Purificai

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Across
  1. 2. ______________ is used to cool down the vapour into liquid water.
  2. 5. _______________ can be obtained after filtration.
  3. 7. ___________ is used along with chlorine in water treatments in swimming pools.
Down
  1. 1. Pure water can be obtained by ____________.
  2. 3. ________________ can be killed by chlorine.
  3. 4. salts are _________ impurities.
  4. 6. _______________ can remove large insoluble impurities in water.