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  3. 10th Class
  4. Science

10th Class Science Sample Paper Science Olympiad Model Test Paper-16

  • question_answer
    The substances which absorb excess neutrons released during the fission reaction in a nuclear reactor are called:

    A) Moderator

    B) control rods

    C) Coolants

    D) heat exchanger

    E) None of these

    Correct Answer: B

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