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Teaching Environmental Studies Water Question Bank Questions - Water

  • question_answer
    Rekha's mother adds Phitkari (Alum) to water collected from the pond every day in order to (CTET Jan 2012)

    A) sediment light suspended impurities

    B) change hard water into soft water

    C) kill germs in water

    D) decolourise water

    Correct Answer: A

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