CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2007

  • question_answer
    Compare List-I and List-II and choose the correct matching codes from the choices given.
    List-I List-II
    A.   Glycerol (i)   Sublimation
    B.   o-nitrophenol (ii)   Beilsteins test
    C.   Anthracene (iii) Victor-Meyers method
    D.  Halogens distillation (iv) Steam
    E.   Molecular weight (v)  Vacuum distillation
    (vi) Eudiometry

    A)  A-(v), B-(iv), C-(i), D-(ii), E-(iii)

    B)  A-(iv), B-(v), C-(i), D-(vi), E-(ii)

    C)  A-(vi), B-(iv), C-(i), D-(m), E-(ii)

    D)  A-(v), B-(iv), C-(vi), D-(ii), E-(iii)

    E)  A-(iv), B-(vi), C-(ii), D-(iii), E-(v)

    Correct Answer: A

    Solution :

    Sublimation-Conversion of solid directly into gaseous phase. The liquid state does not exist. e.g.,\[-\] naphthalene, anthracene. Beilstein test-Simple chemical lest for halogens. Victor-Meyers method-Standard laboratory method for determining the molecular weight of a volatile liquid. Steam distillation- Vaporization of the volatile constituents of a liquid. It is special type of distillation for a temperature sensitive materials like aromatic natural compounds, eg,-ortho nitrophenol, cinnamaldehyde. Vacuum distillation-Distillation at reduced pressure. It is generally used in case of high boiling liquids which decompose below their normal boiling points, cant be purified by distillation   at   atmospheric   pressure\[eg,-\]glycerol. Eudiometry-It is the process of determining the constituents of a gaseous mixture by eudiometer. It is used for ascertaining the purity of air or amount of\[{{O}_{2}}\]in it.


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