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Nisha Gupta • 2.32K Points
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Q. Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in

  • (A) Coagulation and flocculation of colloids
  • (B) Oxidation of carbonaceous matter to CO2
  • (C) Nitrification or oxidation of ammonia derived from breakdown of nitrogenous organic matter to the nitrite and eventually to the nitrate
  • (D) All (A), (B) and (C)
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