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  3. 6th Class
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6th Class Science Sample Paper Science Olympiad Model Test Paper-9

  • question_answer
    In which one of the following changes, the molecules that make up the substances undergo changes?

    A) Melting of iron rod

    B) Burning of paper

    C) Cutting a metal stick

    D) Dissolving salt into water

    E) None of these

    Correct Answer: B

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