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

7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer
    The percentage of water in activated sludge is about

    A) 90%                            

    B) 92%

    C) 95%                            

    D) 97%

    Correct Answer: D

    Solution :

    97%


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