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Class 10 Chemistry Admission Tests: Certification Test 84

Water Pollution Study App & e-Book: MCQ 84

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MCQ: 84

Step of sewage water treatment in which there are some aeration and organic material is converted to inorganic materials is called

  1. primary sewage treatment
  2. secondary sewage treatment
  3. activated sludge treatment
  4. chlorination

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Water Pollution Admission Tests: Class 10 Chemistry App & eBook Quiz

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