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  1. The most practical fuel for a thermonuclear reactor, both from economical and nuclear consideration is

  2. A.

     Plutonium

    B.

     Uranium

    C.

     Deuterium

    D.

     Thorium

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  3. In nuclear fission each neutron that causes fission releases

  4. A.

     No new neutron

    B.

     At least one new neutron

    C.

     One new neutron

    D.

     More than one new neutron

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  5. The commonly used material for shielding is

  6. A.

     Lead or concrete

    B.

     Lead and tin

    C.

     Graphite or cadmium

    D.

     Thick galvanized sheets

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  7. The material most commonly used for shielding is

  8. A.

     Carbon

    B.

     Lead

    C.

     Concrete

    D.

     All of these

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  9. Which of the following is the heaviest?

  10. A.

     Neutron

    B.

     Proton

    C.

     Atom

    D.

     Electron

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  11. Which of the following particles is the lightest?

  12. A.

     Nucleus

    B.

     Electron

    C.

     Proton

    D.

     Meson

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  13. A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to

  14. A.

     Slow down the speed of fast moving neutrons

    B.

     Control the reaction

    C.

     Reduce the temperature

    D.

     Extracts heat from nuclear reaction

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  15. Reflector in nuclear power plants _________ neutron leakage.

  16. A.

     Increases

    B.

     Decreases

    C.

     Have no effect on

    D.

     None of these

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  17. The unit of radioactivity is

  18. A.

     Electron volt

    B.

     Electron ampere

    C.

     Curie

    D.

     MV

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  19. One gram of uranium will produce energy equivalent to approximately

  20. A.

     1 tonne of high grade coal

    B.

     4.5 tonnes of high grade coal

    C.

     10 tonnes of high grade coal

    D.

     100 tonnes of high grade coal

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