7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer

    DIRECTION:  Carefully observe pictures given below and answer the following questions.     Look at the above diagram of sewage treatment plant and answer the questions that follow.  

    What are the products of waste water treatment system?

    A) Sludge             

    B) Biogas

    C) Both a and b   

    D) Vermi cakes

    Correct Answer: C

    Solution :

    Both a and b               

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