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General Knowledge :: Physics

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

  2. A.

     Marie Curie

    B.

     Earnest Rutherford

    C.

     Henry Bacquerel

    D.

     Enrico Fermi


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

  4. A.

     Coal

    B.

     Uranium

    C.

     Radium

    D.

     Diesel


  5. Alpha particle is the nucleus of an atom of

  6. A.

     Lithium

    B.

     Hydrogen

    C.

     Helium

    D.

     Oxygen


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

  8. A.

     Nuclear energy

    B.

     Atomic energy

    C.

     Potential energy

    D.

     Kinetic energy


  9. In nuclear reactor, heavy water is used as

  10. A.

     Coolant

    B.

     Fuel

    C.

     Moderator

    D.

     Atomic smasher


  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


  13. The radiant energy having lowest energy is

  14. A.

     Gamma rays

    B.

     UV rays

    C.

     Visible light

    D.

     Microwave radiation


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

  16. A.

     Atomic emission

    B.

     Atomic absorption

    C.

     Electron emission

    D.

     Electron absorption


  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


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

  20. A.

     Alpha

    B.

     Beta

    C.

     Gamma

    D.

     All of the above