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Chemical Engineering :: Nuclear Power Engineering

  1. Radioactive decay is a __________ change.

  2. A.
    chemical
    B.
    nuclear
    C.
    physical
    D.
    none of these

  3. A moderator __________ the neutrons.

  4. A.
    slows down
    B.
    absorbs
    C.
    accelerates
    D.
    reflects

  5. Thorium can be converted into U-233 in a __________ reactor.

  6. A.
    liquid metal cooled
    B.
    fast breeder
    C.
    thermal
    D.
    swimming pool

  7. Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher

  8. A.
    melting point, hence can be subjected to higher temperature.
    B.
    density ; hence core volume for a given power output would be smaller.
    C.
    resistance to effects of irradiation.
    D.
    all (a), (b) and (c).

  9. Nuclear fuel complex, Hyderabad is engaged in the job of

  10. A.
    manufacture of nuclear fuel elements/assemblies .
    B.
    processing of uranium ore.
    C.
    treatment of spent fuel.
    D.
    none of these.

  11. Which is a fertile nuclear fuel ?

  12. A.
    U-233
    B.
    U-235
    C.
    Pu-239
    D.
    Th-232

  13. The time required for half of the __________ of a radioactive isotope to decay is called its half life.

  14. A.
    nuclei
    B.
    electrons
    C.
    protons
    D.
    neutrons

  15. The ratio of atomic radius to its nuclear radius is about

  16. A.
    105
    B.
    108
    C.
    1012
    D.
    1015

  17. Which one is different for the neutral atoms of the isotopes of an element ?

  18. A.
    Atomic weights
    B.
    Atomic numbers
    C.
    Number of protons
    D.
    Number of electrons

  19. __________ moderator is used in a fast breeder reactor.

  20. A.
    Graphite
    B.
    Heavy water
    C.
    Beryllium
    D.
    No