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
    Industrial waste does not include:

    A) Nitrates             

    B) Phosphates

    C) Mercury and lead           

    D) Oxygen

    E) None of these

    Correct Answer: D

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