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

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

  • question_answer
    Which one of the following is an example of irreversible change?

    A) Melting of wax

    B)        Digestion of food

    C) Melting of coaltar           

    D) Changing water into ice

    E) None of these

    Correct Answer: B

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