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Surface Chemist...

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  • Question 1
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    Emulsions are also called the colloidal solutions in which the dispersed phase as well as dispersion medium are liquids. It may be oil-in-water or water-in-oil type. Emulsifiers can be used to stabilize the emulsion. Soaps, detergents, proteins and gums are used as emulsifiers.

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    Which of the following examples is/are oil-in-water-type emulsion?

  • Question 2
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    Example of an intrinsic colloid is:

  • Question 3
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    Directions For Questions

    Emulsions are also called the colloidal solutions in which the dispersed phase as well as dispersion medium are liquids. It may be oil-in-water or water-in-oil type. Emulsifiers can be used to stabilize the emulsion. Soaps, detergents, proteins and gums are used as emulsifiers.

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    Which of the following is homogeneous?

  • Question 4
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    The process of passing of a precipitate into colloidal solution on adding an electrolyte is called

  • Question 5
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    Sorption is the term used when :

  • Question 6
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    An emulsifier is an agent which :

  • Question 7
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    An oil-soluble dye is mixed with emulsion and the emulsion remains colourless. Then, it is :

  • Question 8
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    Assertion : Physical adsorption of molecules on the surface requires activation energy.
    Reason : The bonds of adsorbed molecules are broken.

  • Question 9
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    There is desorption of physical adsorption when :

  • Question 10
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    In the adsorption of oxalic acid on activated charcoal, the activated charcoal is called :

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