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Surface Chemist...

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  • Question 1
    4 / -1

    After the reaction is over between adsorbed reactants, it is important to create space for the other reactant molecules to approach the surface and react. The process responsible for this is known as

  • Question 2
    4 / -1

    Which of the following statements does not show correct difference between adsorption and adsorption?

  • Question 3
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    Powdered substances are more effective adsorbents than their crystalline form because

  • Question 4
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    The term activation of adsorbent is used when

  • Question 5
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    Which of the following is less than zero during adsorption?

  • Question 6
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    Which of the following is a property of physisorption?

  • Question 7
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    Which of the following statements is not correct about physisorption?

  • Question 8
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    The incorrect statement about physical adsorption is

  • Question 9
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    Which is correct in case of vander Waals adsorption?

  • Question 10
    4 / -1

    Adsorption is accompanied by the evolution of heat. So according to Le-Chatelier principle, the amount of substance adsorbed should

  • Question 11
    4 / -1

    Which of the following gases is least adsorbed on charcoal?

  • Question 12
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    Which of the following is not characteristic of chemisorpiton?

  • Question 13
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    Chemisorption involves formation of bond between gaseous molecules or atoms and the solid surface for which high energy is required. Thus it is also referred as

  • Question 14
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    Which of the following is not correct regarding the adsorption of a gas on the surface of solid?

  • Question 15
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    Which of the plots is adsorption isobar for chemisorption?

  • Question 16
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    Which of the following statements is not correct for chemisorption and physisorption?

  • Question 17
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    In the adsorption of a gas on solid, Freundlich isotherm is obeyed. The slope of the plot is zero. Thus, the extent of adsorption is

  • Question 18
    4 / -1

    In Freundlich adsorption equation x/m = kp1/n, the value of n is

  • Question 19
    4 / -1

    Which of the following graphs would yield a straight line?

  • Question 20
    4 / -1

    A graph is plotted between log (x/m) and P according to the equation x/m = kp1/n

    Which of the following statements about this graph is not correct?

  • Question 21
    4 / -1

    At low pressure, the fraction of the surface covered follows

  • Question 22
    4 / -1

    What is the role of activated charcoal in gas masks used in mines?

  • Question 23
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    Which of the following gases present in a polluted area will be adsorbed most easily on the charcoal gas mask?

  • Question 24
    4 / -1

    Match the column I with column II and mark the appropriate choice.

  • Question 25
    4 / -1

    Which of the following is application of adsorption in chemical analysis?

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