2. Questions Bank
  3. 7th Class
  4. Science
  5. Weather, Climate and Adaptation of Animals to Climate

7th Class Science Weather, Climate and Adaptation of Animals to Climate Question Bank Our Environment

  • question_answer
    Which one of the following is an organic impurity present in sewage?

    A) Nitrates             

    B) Metals

    C) Urea                 

    D)        Phosphates

    E) None of these

    Correct Answer: C

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