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Class 12 Chemistry
Surface Chemistry Chapter 5
Quiz 1
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What kind of forces exists between adsorbate and adsorbent in physisorption?
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hydrogen bond
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ionic bond
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covalent bond
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London force
Adsorbate is represented by which spheres in the following diagram.
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White
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Black
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both
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none
Which phenomenon is represented by the following diagram ?
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adsorption
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absorption
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desorption
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sorption
Which of the following statement is correct about Langmuir's adsorption ?
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It is not specific in nature
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It occurs at low temperature
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It is reversible in nature
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It forms monolayer
Why shoes, purses and leather items have silica gel pouches kept in them?
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for absorption of moisture
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for insect repellant
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for adsorption of moisture correct
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for all the above
The relation between extent of adsorbtion (x/m) and pressure at constant temperature is called as:
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isochore
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isomer
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isobar
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isotherm
Which of the following is the reason for adsorption?
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internal core molecules are experiencing more inward force
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surface molecules are experiencing more inward force
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internal core molecules are experiencing less inward force
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surface molecules are experiencing less inward force
Which of the following quantity/quantities have negative value during adsorption ?
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All the above
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Δ S
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Δ , H
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Δ , G
Adsorption is a phenomenon in which a substance:
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Oxidises or reduces the other substance
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Remains close to the other substance
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Accumulates on the surface of another substance
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Goes into the body of another substance
Freundlich adsorption isotherm is a plot between:
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x/m and T
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x/m and p
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P and T
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V and T
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