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

  • question_answer
    Which of the following will not show Tyndall effect?

    A) Smoke

    B) Foam

    C) Jelly

    D) Salt solution

    Correct Answer: D

    Solution :

    [d] Salt solution will not show Tyndall effect as it is a true solution and particles of salt solution are very small (size < 1 nm). So, these cannot scatter a beam of light, hence do not show Tyndall effect.


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