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8th Class Science Pollution of Air and Water Question Bank Pollution of Air and Water

  • question_answer
    Which of the following is NOT a feature of potable water?

    A)                  Clean, colourless and odourless                

    B)                                         Free from bacteria                

    C)                         Have excessive sodium, calcium and magnesium

    D)                                         Having dissolved oxygen and carbon dioxide

    Correct Answer: C

    Solution :

    Potable water should be free from sodium, calcium and magnesium. Potable water should be clean, colourless and odourless, free from bacteria and must contain dissolved oxygen and carbon dioxide.


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