Followin are the serms about ac itivty and selectivity:
I. Acitivity is the ability of catalysts to accelerate chemical reactions and selectivity is the ability of catalysts to direct reaction to yield particular products.
II. Activity is the ability of catalyst and selectivity is the ability of catalysts to accelerate chemical reactions. Select the correct term :

Options

A. I
B. II
C. I and II both
D. none of these.

Answer

A

Explanation

Only term (I) is correct. This has relavence in shape selective catalysts. For example, in catalyst ZSN-5, the nature of the products such as linear and branched iso-alkanes and benzene derivatives depends upon the pore size of the zeolite.