(B) The statement in option $B$ is incorrect because both physisorption and chemisorption can occur at various pressures depending on the nature of th

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Physisorption is observed at high pressure,while chemisorption is observed at low pressure.

(B) The statement in option $B$ is incorrect because both physisorption and chemisorption can occur at various pressures depending on the nature of the adsorbent and adsorbate. Physisorption is generally favored at low temperatures and high pressures,while chemisorption often requires activation energy and can occur at higher temperatures.

Class 12 Chemistry Surface Chemistry Adsorption and Adsorption isotherm

Easy

Which of the following statements is incorrect?

A
Physisorption is reversible,whereas chemisorption is irreversible.
B
Physisorption is observed at high pressure,while chemisorption is observed at low pressure.
C
Physisorption is non-specific,whereas chemisorption is highly specific.
D
Chemisorption requires high activation energy.