2. Sample Papers
  3. 7th Class
  4. Science

7th Class Science Sample Paper Science Olympiad Model Test Paper-6

  • question_answer
    Which one of the following is the inorganic impurities present in sewage?

    A) Metals

    B) Urine

    C) Vegetable wastes

    D) Animal dung

    E) None of these

    Correct Answer: A

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