The number of statement/s which are the characteristics of physisorption is ______ A. It is highly specific in nature B. Enthalpy of adsorption is high C. It is decreases with increase in temperature

Question

The number of statement/s which are the characteristics of physisorption is ______ A. It is highly specific in nature B. Enthalpy of adsorption is high C. It is decreases with increase in temperature D. It is results into unimolecular layer E. No activation energy is needed NTA. RESO. 2 Sol.

(A) Physisorption is not depend on nature of Adsorbate. So it is not specific in nature.
(B) In physisorption enthalpy of adsorption is low (20-40 KJ/mol).
(C) Physisorption are decrease with increase in temperature.
(D) Physisorption is multimolecular layered. (E) In Physisorption activation energy is not required.

Prashant Kotian · Accepted Answer

Correct answer: B. (A) Physisorption is not depend on nature of Adsorbate. So it is not specific in nature. (B) In physisorption enthalpy of adsorption is low (20-40 KJ/mol). (C) Physisorption are decrease with increase in temperature. (D) Physisorption is multimolecular layered. (E) In Physisorption activation energy is not required.

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