Q.

Select the correct option from the following option.

A. catalyst is used to increase the rate of reaction by altering chemically during the course of reaction
B. catalyst is used to decrease the rate of reaction by altering chemically during the course of reaction
C. catalyst is used to increase the rate of reaction and remains unaltered chemically during the course of reaction
D. catalyst is used to decrease the rate of reaction and remains altered chemically during the course of reaction
Answer» C. catalyst is used to increase the rate of reaction and remains unaltered chemically during the course of reaction
Explanation: catalyst is used to increase the rate of reaction and remains unaltered chemically during the course of the reaction. with a catalyst, reactions occur faster and require less activation energy. because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant.
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