Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the ...

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Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the same conditions, the more strong adsorbate is adsorbed to greater extent irrespective of its amount present, e.g., \( \mathrm{H}_{2} \mathrm{O} \) is adsorbed to more extent on silica gel than \( \mathrm{N}_{2} \) and \( \mathrm{O}_{2} \). This shows that some adsorbates are preferentially adsorbed. It is also observed that preferentially adsorbable adsorbents can displace a weakly adsorbed substance from the surface of an adsorbent.
When temperature is increased
(A) extent of adsorption increases
(B) extent of adsorption decreases
(C) no effect on adsorption
(D) extent of adsorption first decreases, then increases
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