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  3. 7th Class
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7th Class Science Sample Paper Science Olympiad Model Test Paper-17

  • question_answer
    What do you mean by sewage?

    A) The drinking water which is supplied to our houses

    B) The groundwater which is drawn out for household purposes

    C) The rainwater which mixes in river

    D) The wastewater from houses, factories, hospitals etc carried by sewers

    E) None of these

    Correct Answer: D

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