(A) A catalyst increases the rate of areaction.
(R)In presence of a catalyst, the activation energy of the reaction increases.

A: A catalyst increases the rate of a reaction. R: In presence of a catalyst, the activation energy of the reaction increases.

A catalyst increases the rate of reaction by :

Assertion: A catalyst increases the rate of a reaction. Reason: In presence of a catalyst, the activation energy of the reaction decreases.

Assertion: A catalyst increases the rate of a reaction. Reason: In presence of a catalyst, the activation energy of the reaction decreases.

A catalyst increases the rate of a reaction by:

A catalyst increases the rate of a reaction by:

A catalyst increases the rate of a reaction by: