1.

(A)Enthalpy of physical adsorption is lower than chemical adsorption (R ) Molecules of adsorbate and adsorbent are held together by vanderwall forces in physical adsorption and by chemical bonds in chemical adsorption

Answer»

Both (A) and (R ) are true and (R ) is the correct EXPLANATION of (A)
Both (A)and (R ) are true and (R ) is not the correct explanation of (A)
(A) is true but (R ) is false
Both (A) and (R ) are false

ANSWER :A


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