A) 40-400
B) 40-100
C) 10-40
D) 200-400
E) 1-10
Correct Answer: C
Solution :
In the physical adsorption the attractive forces between adsorbent and the adsorbate molecules are weak and therefore, molar heat. of adsorption is low and lie in the range of\[10.40\text{ }kJ\,mo{{l}^{-1}}\].
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