2. Sample Papers
  3. 6th Class
  4. Science

6th Class Science Sample Paper Science Olympiad Model Test Paper-2

  • question_answer
    Which one of the following changes cannot be reversed to get back the original substance?

    A) Melting of wax

    B) Evaporation of water

    C) Burning of paper

    D) Increase in temperature of a metal wire

    E) None of these

    Correct Answer: C

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