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General Knowledge :: Chemistry

  1. The National Chemical Laboratory is situated in

  2. A.

     New Delhi

    B.

     Bangalore

    C.

     Pune

    D.

     Patna


  3. Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

  4. A.

     2 : 16 : 2

    B.

     2 : 16 : 1

    C.

     1 : 16 : 2

    D.

     1 : 1 : 1


  5. The mass number of an atom is equal to

  6. A.

     the number of protons

    B.

     the number of protons and electrons

    C.

     the number of nucleons

    D.

     the number of neutrons


  7. The maximum number of covalent formed by nitrogen is

  8. A.

     1

    B.

     2

    C.

     3

    D.

     4


  9. The formula C6H5-CO-CH3 represents

  10. A.

     Acetone

    B.

     Acetic acid

    C.

     Acetophenone

    D.

     Phenyl acetate


  11. The metal that is usually extracted from sea water is

  12. A.

     Ca

    B.

     Na

    C.

     K

    D.

     Mg


  13. The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

  14. A.

     liquation

    B.

     leaching

    C.

     levigation

    D.

     magnetic separation


  15. The inert gases are ____ in water.

  16. A.

     sparingly soluble

    B.

     insoluble

    C.

     soluble

    D.

     None of these


  17. The molecular formula of phosphorous is

  18. A.

     P1

    B.

     P2

    C.

     P3

    D.

     P4


  19. The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of

  20. A.

     atomic structure

    B.

     metallurgy

    C.

     periodic table of contents

    D.

     discovery of elements