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    Question

    Which material is used as a moderator in a nuclear power

    plant that slows down the neutrons and makes them fit for causing fission?
    A Boron Correct Answer Incorrect Answer
    B Beryllium Correct Answer Incorrect Answer
    C Silicon Correct Answer Incorrect Answer
    D Graphite Correct Answer Incorrect Answer

    Solution

    In a nuclear power plant, materials such as graphite  or heavy water (deuterium oxide, D₂O) are used as moderators. These materials slow down the neutrons, making them more likely to cause fission when they interact with nuclear fuel.

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