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Surface Chemist...

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  • Question 1
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    The basic principle of Cottrell's precipitator is

  • Question 2
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    For the coagulation of ferric hydroxide solution, what will be the increasing order of effectiveness of the given electrolytes?

    (a) SnCl4
    (b) CaSO4
    (c) AlPO4
    (d) K4Fe(CN)6

  • Question 3
    1 / -0

    Each of the two phases may be solid, liquid or gaseous, resulting in several different types of colloidal systems depending on the state of the dispersed phase and the dispersion medium. An example of the colloid, which is formed by the dispersion of a gas in a solid, is

  • Question 4
    1 / -0

    Which of the following cations will have the minimum and the maximum flocculation values for a gold sol?

    a. Na+
    b. Mg2+
    c. Ca2+
    d. Al3+

  • Question 5
    1 / -0

    Which of the following is the intermediate formed during the conversion of methanol to gasoline of a high octane number, using a zeolite?

  • Question 6
    1 / -0

    If H2, CH4, CO2 and NH3 gases are adsorbed by 1 gram of charcoal at 290 K temperature, then the decreasing order of their adsorbed volumes is

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