2. Questions Bank
  3. 7th Class
  4. Science
  5. Wastewater Story

7th Class Science Wastewater Story Question Bank Self Test-16

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

    A)  Metals

    B)  Plastics

    C)  Vegetable wastes

    D)  Both A and B

    E)  None of these

    Correct Answer: C

    Solution :


You need to login to perform this action.
You will be redirected in 3 sec spinner