1.

Select the correctstatements . (i) Physical adsorption is weak, multilayer, non-directional and non-specific. (ii) Chemical adsorption is strong, unilayer, directional and strong (iii) Chemical adsorption decreases with temperature (iv) Chemical adsorption is more stronger than physical adsorption

Answer»

(i) and (III) only
(i), (II) and (IV) only
(iii) only
All of these.

Solution :Chemisorption first increases with temperature as it REQUIRES energy of activation.


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