Though, theoretically the adsorption & desorption isotherms is expected

to coincide but sometimes at least a part of the isotherms does not coincide

and this phenomenon is known as adsorption hysteresis. In such cases, the

desorption equilibrium pressure is __________ that obtained for adsorption.

(A) Lower than

(B) Higher than

(C) Same as

(D) Either same or higher than

1 Answer

Answer :

(A) Lower than

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