7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer 47) DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 2 Treatment of waste water involves physical, chemical and biological processes, which remove physical, chemical and biological matter that contaminates the waste water. The treated water coming out of WWTP

    A) has very low level of organic material and suspended impurities.

    B) is free of organic material and suspended impurities.

    C) Both the above are correct

    D) None of these

    Correct Answer: A

    Solution :

    has very low level of organic material and suspended impurities.

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