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Chemical Engineering :: Nuclear Power Engineering

  1. Thermal neutrons which are used to cause the fission of U-235 have energy __________ eV.

  2. A.
    < 0.025
    B.
    > 1
    C.
    1-25
    D.
    > 200.

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  3. Which of the following types of nuclear reactors is most prone to radioactive hazards ?

  4. A.
    Pressurised water reactor
    B.
    Gas cooled reactor
    C.
    Molten sodium cooled reactor
    D.
    Boiling water reactor

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  5. Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235.

  6. A.
    1
    B.
    2
    C.
    3
    D.
    7

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  7. 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 ?

  8. A.
    A+Z
    B.
    A- Z
    C.
    A
    D.
    Z

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  9. Which of the following is not used as a nuclear fuel cladding material ?

  10. A.
    Zircalloy
    B.
    Cadmium
    C.
    Ceramics
    D.
    Stainless steel

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  11. The function of moderators in nuclear reactor is to

  12. A.
    slow down the secondary neutrons.
    B.
    absorb the secondary neutrons.
    C.
    control the chain reaction.
    D.
    none of these.

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  13. Specific gravity of uranium and plutonium is about

  14. A.
    9
    B.
    13
    C.
    19
    D.
    27

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  15. Pick out the wrong statement.

  16. A.
    The nucleus of a hydrogen atom is identical with a proton.
    B.
    A, β-ray particle is identical with an electron.
    C.
    Mass of an electron is about 1/1800th of the lightest nucleus.
    D.
    Positron is heavier than a proton.

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  17. If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be __________ days.

  18. A.
    5
    B.
    10
    C.
    20
    D.
    30

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  19. __________ nuclear reactor does not require a heat exchanger to supply steam to power turbine.

  20. A.
    Molten sodium cooled
    B.
    Helium cooled
    C.
    Boiling water
    D.
    Pressurised water

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