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9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Which one of the following statements best describes electrophoresis?

    A) Scattering of white light by colloidal particles.

    B) Movement of colloidal particles under the influence of electric field.

    C) The precipitation and settling down of the discharged colloidal particles.

    D) The zig-zag motion shown by colloidal particles in dispersion medium.

    E) None of these

    Correct Answer: B

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