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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
    Select those which are organic substances present in waste water.

    A) pesticides                                

    B) herbicides

    C) fruit and vegetable waste

    D) All of these

    Correct Answer: D

    Solution :

    All of these


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