2. Sample Papers
  3. 7th Class
  4. Science

7th Class Science Sample Paper Science Olympiad Model Test Paper-4

  • question_answer
    Which one of the following subatomic particles are exchanged from one atom to another during a chemical reaction?

    A) Neutrons

    B) Protons

    C) Electrons

    D) All of these

    E) None of these

    Correct Answer: C

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