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  3. 9th Class
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9th Class Science Sample Paper Science Olympiad Model Test Paper-13

  • question_answer
    Which one of the following statements about colloids is incorrect?

    A) Colloids are heterogeneous in nature

    B) Colloids do not show electrophoresis

    C) Colloids exhibit Brownian movement

    D) All of these

    E) None of these

    Correct Answer: B

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