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Which of the following is used a nuclear reactor to slow down fast moving neutrons?

Physics
WAEC 1993

Which of the following is used a nuclear reactor to slow down fast moving neutrons?

  • A. Carbondioxide gas
  • B. Liquid sodium metal
  • C. Concrete shield
  • D. Graphite rods
  • E. Boron rods
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Correct Answer: Option D
Explanation

The uses of graphite:

  • Used in making a pencil.
  • Used as a dry lubricant.
  • For making electrodes.
  • For polishing iron articles.
  • As a moderator in the nuclear furnace.

The moderator of a nuclear reactor is a substance that slows neutrons down.

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