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  3. 7th Class
  4. Science
  5. Water: A Precious Resource

7th Class Science Water: A Precious Resource Question Bank Water : A Precious Resource

  • question_answer
    The impurities present in sewage may consist of

    A) organic substances

    B) inorganic substances

    C) Nutrients

    D) All of these

    Correct Answer: D

    Solution :

    All of these


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