Physical adsorption of a gaseous species may change to chemical adsorption with a/an:

Decrease in the temperature

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Increase in the temperature

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Increase in the surface area of the adsorbent

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Decrease in the surface area of the adsorbent

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Solution

The correct option is B Increase in the temperature
As temperature increases, the enegy possessed by reactant molecules increases. And when the energy become greater than or equal to activation energy, they can form chemical bonds. Thus physical adsorption changes to chemical adsorption at high temperature.

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Similar questions

Which statements are correct ?

i) physical adsorption is due to Vander Waal’s forces

ii) physical adsorption decreases at high temperature

iii) physical adsorption is irreversible

iv) enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

Which statement is/are correct?

i) Physical adsorption is due to Vander Waal's forces

ii) Physical adsorption decreases at high temperature

iii) Physical adsorption is irreversible

iv) Enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

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