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Which of the following statements about ...

Which of the following statements about physical adsorption is not correct?

A

It is always monolayer

B

It is reversible in nature

C

It is involves van der Waals interactions between adsorbent and adsorbate

D

It involves small enthalpy of adsorption as compared to chemisorption.

Text Solution

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The correct Answer is:
B, C, D
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Knowledge Check

  • Which of the following statements about photochemical smog is not correct ?

    A
    It occurs in warm , dry and sunny climate .
    B
    Chemically , it is a reducing mixture and is called reducing smog.
    C
    It is formed as a result of action of sunlight on unsaturated hyfrocarbons and nitrogen oxides .
    D
    It has high cncentration of oxidising agents and is also called oxidising smog.

  • The incorrect statement about physical adsorption is

    A
    it lacks specificity
    B
    it is generally reversible
    C
    porous surfaces are good adsorbent
    D
    heat of adsorption is quite high.

  • Which of the following statements about dark reactions is correct?

    A
    They occur in darkness.
    B
    They are not light dependent.
    C
    They are dependent upon the products syntesised during light reactions.
    D
    All of these