Class 10 Chemistry MCQs (Grade 10) From Textbook

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Class 10 Chemistry MCQs – Certification Test 84

Water Pollution Quiz (Question 84) – Study App & e-Book Download

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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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10th Grade Chemistry Quiz App (Android & iOS)

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