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Why is it important to have clean surfac...

Why is it important to have clean surface in surface studies ?

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Knowledge Check

  • Why is it important to have iodised salt in our diet?

    A
    It improves eye sight
    B
    It helps in smooth functioning of the thyroid gland
    C
    It helps in building bones
    D
    It helps in gaining height

  • The adsorption of vapours on a clean surface is a spontaneous process because

    A
    change in the entropy of the process is highly positive
    B
    enthalpy change is highly positive
    C
    change in entropy is zero
    D
    change in enthalpy is highly negative

  • The surface of srystals can be studied using

    A
    diffraction of visible light
    B
    diffraction of x-rays
    C
    interference of sound waves
    D
    refraction of radio waves
    • PRADEEP-SURFACE CHEMISTRY -IMPORTANT QUESTIONS (FOR BOARD EXAMINATION)
    1. Why is it important to have clean surface in surface studies ?

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    2. In an adsorption experiment, a graph between log (x/m) versus log P wa...

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    3. Which will be adsorbed more readily on the surface of charcoal and why...

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    4. Adsorption of a gas on the surface of solid is sgenerally accompanied ...

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    5. Give one point of similarity and three points of difference between ph...

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    6. What is an adsorption isotherm? Describe Freundlich adsorption isother...

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    7. What role does adsorption play in heterogeneous catalysis ?

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    8. What is the role of activated charcoal in gas mask used in coal mines?

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    9. Why is ester hydrolysis slow in the beginning and becomes faster after...

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    10. What do you mean by activity and selectivity of catalysts ?

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    11. Descirbe some features of catalysis by zeolites.

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    12. What are enzymes ? Write in brief the mechanism of enzyme catalysis ?

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    13. Do the vital functions of the body such as digestion get affected duri...

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    14. What is Ziegler-Natta catalyst ? Give the reaction for which it is use...

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    15. Comment on the statement that " colloid is not a substance but state ...

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    16. What is the difference between multimolecular and macromolecular colli...

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    17. What are lyophilic and lyophobic sols ? Give one example of each type....

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    18. What is collodion ?

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    19. How will you obtain a colodial sol of aresenious sulphide ?

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    20. How can you make dialysis fast ?

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