2. Questions Bank
  3. 8th Class
  4. Science
  5. Pollution of Air and Water

8th Class Science Pollution of Air and Water Question Bank Pollution of Air and Water

  • question_answer
    _____ is added to water to separate the smaller particles from water by making them heavier in the process of loading.

    A) Sulphuric acid   

    B) Alum

    C) DDT                 

    D)        Chlorine

    E) None of these

    Correct Answer: B

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