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Chemical Engineering :: Nuclear Power Engineering

  1. Nuclides having the same atomic numbers are termed as

  2. A.
    isotopes
    B.
    isomers
    C.
    isotones
    D.
    isobars

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  3. The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235 , followed by nuclear fission is

  4. A.
    1
    B.
    2
    C.
    3
    D.
    4

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  5. A fertile material is the one, which can be

  6. A.
    converted into fissile material on absorption of neutron.
    B.
    fissioned by slow (thermal) neutrons.
    C.
    fissioned by fast neutrons.
    D.
    fissioned by either slow or fast neutrons.

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  7. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material).

  8. A.
    15
    B.
    45
    C.
    65
    D.
    85

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  9. Thorium metal

  10. A.
    resembles steel in appearance.
    B.
    is less hard (in the range of silver).
    C.
    is highly ductile.
    D.
    all (a), (b) and (c).

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

  12. A.
    U-238
    B.
    U-233
    C.
    U-235
    D.
    Pu-239

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  13. Atoms with same number of neutrons, but different number of nucleons are called

  14. A.
    isotones
    B.
    isobars
    C.
    isotopes
    D.
    isoters

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  15. Which of the following ores contains maximum percentage of uranium ?

  16. A.
    Carnotite
    B.
    Thorium.
    C.
    Rescolite
    D.
    Pitchblende

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  17. Uranium ore is currently mined & concentrated at

  18. A.
    Jadugoda
    B.
    Ghatsila
    C.
    Khetri
    D.
    Alwaye

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  19. How many atoms are present in one gm-atom of an element ?

  20. A.
    2 x 1023
    B.
    6 x 1023
    C.
    6 x 1032
    D.
    5 x 105

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