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General Knowledge :: Chemistry

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

  2. A.
    2 : 16 : 2
    B.
    2 : 16 : 1
    C.
    1 : 16 : 2
    D.
    1 : 1 : 1

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  3. The mass number of an atom is equal to

  4. A.
    the number of protons
    B.
    the number of protons and electrons
    C.
    the number of nucleons
    D.
    the number of neutrons

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  5. The maximum number of covalent formed by nitrogen is

  6. A.
    1
    B.
    2
    C.
    3
    D.
    4

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  7. The formula C6H5-CO-CH3 represents

  8. A.
    Acetone
    B.
    Acetic acid
    C.
    Acetophenone
    D.
    Phenyl acetate

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

  10. A.
    Ca
    B.
    Na
    C.
    K
    D.
    Mg

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

  12. A.
    liquation
    B.
    leaching
    C.
    levigation
    D.
    magnetic separation

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  13. The inert gases are ____ in water

  14. A.
    sparingly soluble
    B.
    insoluble
    C.
    soluble
    D.
    None of these

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  15. The molecular formula of phosphorous is

  16. A.
    P1
    B.
    P2
    C.
    P3
    D.
    P4

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

  18. A.
    atomic structure
    B.
    metallurgy
    C.
    periodic table of contents
    D.
    discovery of elements

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