1.

According to the adsorption theory of catalysis, the speed of the reaction increases because      [CBSE PMT 2003]

A.      Adsorption lowers the activation energy of the reaction    
B.      The concentration of reactant molecules at the active centres of the catalyst becomes high due to adsorption
C.      In the process of adsorption, the activation energy of the molecules becomes large
D.      Adsorption produces heat which increases the speed of the reaction
Answer» B.      The concentration of reactant molecules at the active centres of the catalyst becomes high due to adsorption


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