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Doctors Medicines MCQs Q&A

  1. Light weight atoms
  2. Heavy weight atoms
  3. Critical atoms
  4. Zero weight atoms
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1 Answers

Answer: Option 1

Moderators are made from materials with light nuclei which do not absorb the neutrons but rather slow them down by a series of collisions. Carbon in the form of graphite is a material used for moderators as is heavy water which is Deuterium an isotope of Hydrogen with an atomic mass of 2 bonded to Oxygen.

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