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9th Class Science Is Matter Around Us Pure Question Bank Is Matter Around Us Pure

  • question_answer
    Natural water is impure and needs to be purified before this water can be supplied to homes for drinking purposes. The sequence of steps involved in purification of water is

    A) Filtration, sedimentation, decantation and aeration

    B) Sedimentation, loading, filtration and chlorination

    C) Chlorination, aeration, sedimentation and filtration

    D) Chlorination, filtration and distillation.

    Correct Answer: B

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