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
    In which of the following methods impure water is passed through a semipermeable membrane to remove impurities?

    A) Exposure to UV radiation

    B) Chlorination

    C) Reverse osmosis

    D) Boiling

    E) None of these

    Correct Answer: C

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