Water Purification

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Across
  1. 2. the form of chlorine which is commonly sold through chemist
  2. 5. the type of chlorine which is available to destroy the pathogenic organisms in water
  3. 6. instrument to measure the free residual chlorine in water
  4. 10. one of the mechanical methods of water purification
  5. 11. one of the advantage of chlorine for purification of water
Down
  1. 1. the compound which gets formed and later destroyed in the process of break-point chlorination
  2. 3. the amount of chlorine to be added to achieve break point
  3. 4. a type of water where the microbial contamination is more than chemical hardness
  4. 7. One of the chemical method of water purification
  5. 8. this is the form in which chlorine is used in water filtration plant
  6. 9. a source of water supply where reverse osmosis method of purification is justified