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9th Class Science Is Matter Around Us Pure Question Bank MCQs - Is Matter Around us Pure

  • question_answer
    The method used to separate a dye from blue ink is

    A) evaporation

    B) sedimentation

    C) crystallisation

    D) filtration

    Correct Answer: A

    Solution :

    [a]
    Blue ink is a mixture of blue-dye (non-volatile solute) and water (volatile solvent). On evaporation, water is separated from the blue-dye \[\therefore \] water becomes volatile at \[100{}^\circ C\], while blue-dye is left in the container).
    Hence, (a) is the correct option.


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