(C) catalyst increases the rate of a reaction by providing an alternative pathway with lower activation energy. Therefore,the assertion $(A)$ is true

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$(A)$ is true,but $(R)$ is not true

(C) catalyst increases the rate of a reaction by providing an alternative pathway with lower activation energy. Therefore,the assertion $(A)$ is true because the rate of reaction increases. However,the reason $(R)$ is false because the activation energy of the reaction decreases in the presence of a catalyst,not increases.

Class 11 Chemistry Data Entry - Chemistry Level 0 of all question bank

Assertion $(A)$: $A$ catalyst increases the rate of a reaction.
Reason $(R)$: In the presence of a catalyst,the activation energy of the reaction increases.
The correct answer is

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A
Both $(A)$ and $(R)$ are true and $(R)$ is the correct explanation of $(A)$
B
Both $(A)$ and $(R)$ are true but $(R)$ is not the correct explanation of $(A)$
C
$(A)$ is true,but $(R)$ is not true
D
$(A)$ is not true,but $(R)$ is true