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  1. Choose the most appropriate answer: Natural radioactivity was discovered by

  2. A.

     Marie Curie

    B.

     Earnest Rutherford

    C.

     Henry Bacquerel

    D.

     Enrico Fermi

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  3. In a nuclear reactor, one of the following is used as a fuel.

  4. A.

     Coal

    B.

     Uranium

    C.

     Radium

    D.

     Diesel

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  5. Alpha particle is the nucleus of an atom of

  6. A.

     Lithium

    B.

     Hydrogen

    C.

     Helium

    D.

     Oxygen

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  7. Energy stored in the nucleus of an atom is called

  8. A.

     Nuclear energy

    B.

     Atomic energy

    C.

     Potential energy

    D.

     Kinetic energy

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  9. In nuclear reactor, heavy water is used as

  10. A.

     Coolant

    B.

     Fuel

    C.

     Moderator

    D.

     Atomic smasher

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  11. Radioactive elements can be traced out in living cell through a technique called

  12. A.

     Centrifugation

    B.

     Chromatography

    C.

     Auto radiography

    D.

     All the above

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  13. The radiant energy having lowest energy is

  14. A.

     Gamma rays

    B.

     UV rays

    C.

     Visible light

    D.

     Microwave radiation

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  15. The mercury and sodium street lamps light up because of :

  16. A.

     Atomic emission

    B.

     Atomic absorption

    C.

     Electron emission

    D.

     Electron absorption

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  17. Nuclear Reactors are based on which of the following phenomenon?

  18. A.

     Magnetic confinement of Plasma

    B.

     Nuclear Fusion

    C.

     Controlled Nuclear Fission

    D.

     None of the above

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  19. Which type of radiation has the lowest penetrating ability?

  20. A.

     Alpha

    B.

     Beta

    C.

     Gamma

    D.

     All of the above

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