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A moderator generally used in nuclear power plants is

A. Graphite

B. Heavy water

C. Concrete

D. Graphite and concrete

Correct Answer : D.


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  1. Each fission of U₂₃₅ produces on the average _________ fast neutrons as a product…
  2. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the…
  3. Isotopes of same elements have
  4. The energy produced by a thermal reactor of same size as a breeder reactor is
  5. Amongst the following, the fissionable materials are
  6. A power plant giving least running cost of production of electrical power is
  7. In triggering fission, which types of neutrons are more effective?
  8. Plutonium (Pu239) is produced
  9. A pressurised water reactor employs pressurises for the following application
  10. In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a
  11. Effective moderators are those materials which contain
  12. U233 is produced
  13. A moderator
  14. U235 will undergo fission by
  15. A moderator generally used in nuclear power plants is
  16. Plutonium (Pu₂₃₉) is produced
  17. Enriched uranium is one in which
  18. Artificial radioactive isotopes find application in
  19. The following present serious difficulty in designing reactor shield
  20. Which of the following are ferrite materials?
  21. The energy released during the fission of one atom of Uranium 235 in million electron volts is about
  22. A fast breeder reactor
  23. One gram of uranium will produce energy equivalent to approximately
  24. Ideally the neutron flux in reactor should be
  25. The process by which a heavy nucleus is spitted into two light nuclei is known as
  26. The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is
  27. In a fission process, maximum percentage of energy is released as
  28. A fast breeder reactor uses
  29. When a reactor becomes critical, then the production of neutrons is
  30. The fast breeder reactor uses the following moderator