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Hydrogen is preferred as better coolant in comparison to CO₂ because former

A. Is lighter

B. Is inert

C. Has high specific heat

D. Is a good conductor

Correct Answer : C.


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  1. In the breeder reactors the generation of new fissionable atom is
  2. In natural uranium, the constituents of three naturally occuring isotopes are
  3. U238 will undergo fission by
  4. The material most commonly used for shielding is
  5. In nuclear fission each neutron that causes fission releases
  6. Moderator in nuclear plants is used to
  7. The process by which a heavy nucleus is spitted into two light nuclei is known as
  8. In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio…
  9. The energy required to be applied to a radioactive nucleus for the emission of a neutron is
  10. Natural uranium is made up of
  11. The mass number of a substance represents the sum of total number of
  12. Half life of a radioactive isotope corresponds to the time required for half of the following to decay
  13. Ideally the neutron flux in reactor should be
  14. The most commonly used moderator in nuclear plants is
  15. Effective moderators are those materials which contain
  16. Artificial radioactive isotopes find application in
  17. U233 is produced
  18. A nuclear reactor is said to be critical when the neutron population in the reactor core is
  19. Solid fuel for nuclear reactions may be fabricated into various small shapes such as
  20. Breeder reactors employ liquid metal coolant because it
  21. A moderator, apart from its high neutron slowing power, and low non-productive neutron, should be
  22. In boiling water reactor, moderator is
  23. Fast breeder reactor uses
  24. Ferrite material is
  25. The nuclear energy is measured as
  26. The fast breeder reactor uses the following moderator
  27. In fast breeder reactors
  28. A nuclear unit becoming critical means
  29. Reactors designed for propulsion applications are designed for
  30. Which of the following nuclear reactor does not need a heat exchanger for generation of steam?