Chain Reaction and Nuclear Reactors MCQ

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• Enrichment of uranium is done to increase the concentration of __________ in the natural uranium.
  ক

  U-235

  খ

  U-233

  গ

  U-238

  ঘ

  PU-239
• Main source of __________ is monazite sand.
  ক

  Uranium

  খ

  Polonium

  গ

  Halfnium

  ঘ

  Thorium
• __________ moderator is used in a fast breeder reactor.
  ক

  Heavy water

  খ

  Graphite

  গ

  No

  ঘ

  Beryllium
• The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element?
  ক

  Z

  খ

  A

  গ

  A+Z

  ঘ

  A-Z