Self Studies

Surface Chemist...

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  • Question 1
    1 / -0

    List I contains the type of colloid while List ll contains the examples. 

    List IList II
    A. Sol p. Dust
    B. Aerosol q. Cheese
    C. Gel  r. Soap lather
    D. Foams. Plant cell fluid 

  • Question 2
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    Gold sol can be prepared by:

  • Question 3
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    Which type of catalyst is ethanol in the following reaction?

    $$CHCl_3+O_2\xrightarrow{{C_2H_5OH}}2COCl_2+2HCl$$.

  • Question 4
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    The enthalpy($$H$$) of an elementary exothermic reaction $$A\rightleftharpoons B$$ is schematically plotted against the reaction coordinate. The plots in the presence and absence of a catalyst are shown in dashed and solid lines, respectively. Identify the correct plot for the reaction.

  • Question 5
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    Which one of the following processes does not involve coagulation?

  • Question 6
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    Match list I with List II and select the correct answer using the codes given below the  lists:

    List IList II
    (A) Coagulation(1) Scattering
    (B) Lyophilization(2) Washing of precipitates
    (C) Peptization(3) Purification of colloids
    (D) Tyndall(4) Electrolyte

  • Question 7
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    Select the correct statement.

  • Question 8
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    Some medicines are more effective in the colloidal form because of:

  • Question 9
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    When an excess of a very dilute aqueous solution of KI is added to a very dilute aqueous solution of silver nitrate, the colloidal particles of silver iodide are associated with which of the following Helmholtz double layer?

  • Question 10
    1 / -0

    An inhibitor is essentially: 

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