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Chemical Engineering :: Nuclear Power Engineering

  1. Which of the following undergoes fission reaction easily ?

  2. A.
    U-235
    B.
    U-238
    C.
    Th-232
    D.
    none of these

  3. Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material.

  4. A.
    thorium-233
    B.
    uranium-235
    C.
    uranium-233
    D.
    plutonium-239

  5. Percentage of heavy water in ordinary water is around

  6. A.
    0.015
    B.
    7.54
    C.
    0.71
    D.
    32.97

  7. Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of

  8. A.
    high carbon steel.
    B.
    molybdenum.
    C.
    zircalloy.
    D.
    boron or cadmium.

  9. Which of the following is not used as a moderator in nuclear reactor ?

  10. A.
    Molten sodium
    B.
    Light water
    C.
    Beryllium
    D.
    Boron hydride

  11. In β-decay of radioactive material, the ratio of neutron to proton

  12. A.
    increases.
    B.
    remains same.
    C.
    decreases.
    D.
    is unpredictable; may increase or decrease.

  13. When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as

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

  15. The critical mass of a fissionable material can be reduced by

  16. A.
    heating it.
    B.
    cooling it.
    C.
    surrounding it by neutron reflecting material.
    D.
    surrounding it by neutron absorbing material.

  17. Primary purpose of a __________ nuclear reactor is to supply a high neutron flux of the order of 1013 to 1014 neutrons/cm2 second.

  18. A.
    research
    B.
    power
    C.
    breeder
    D.
    homogeneous