Which of the following statements is false?

a)

a catalyst alters the mechanism of reaction.

b)

a catalyst increases the rate of the forward reaction, but does not alter the reverse rate.

c)

a catalyst alters the activation energy.

d)

a catalyst may be altered in the reaction, but is always regenerated.

e)

a catalyst increases the rate of reaction, but is not consumed.

B) A catalyst increases the rate of the forward reaction,but does not alter the reverse rate.

Explanation:

A catalyst is a substance that increases the rate of reaction by providing an alternate mechanism which has low activation energy.

Hence options A and C are correct.

A catalyst increases the rate of forward and backward reaction to the same extent so that the equilibrium conditions remains unchanged.

Hence option B is wrong.

It is obvious that catalysis increases the rate of reaction but is not consumed.

It may be altered in the reaction but is always regenerated at the end.

Hence options D and E are correct.