Which of the following is used as a moderator in the reactor of a nuclear power station?; A. Liquid sodium; B. boron; C. Graphite; D. carbon dioxide
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Answer:
the correct answer is graphite
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Answer:
(C). Graphite
Explanation:
In the question,
The moderators are used in the reactor of a nuclear power station for the slowing down of neutrons which are generated from the fission of the radioactive material inside of the reactor.
The moderators consist of light atoms which are used for reducing the velocity of the heavy neutrons by colliding with them the neutrons generated are very fast and upto the velocity of 2 meV to the thermal velocities.
There are other moderators which we can use for the same purpose like heavy water (D₂O) in some proportion with the solid graphite.
Hence, the correct option is (C) Graphite.
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