Match the statement given in List-I with statements given in List-II

Choose the correct answer from the options given below:

(A)-(II), (B)-(I), (C)-(III), (D)-(IV)

The correct answer is Option (1) → (A)-(II), (B)-(I), (C)-(III), (D)-(IV)

(A) Catalysts alter the rate of reaction $\rightarrow$ (II) by lowering the activation energy

Catalysts provide an alternative reaction pathway with lower activation energy. Lower $E_a$ means more molecules can overcome the barrier at the same temperature, so the rate increases.

(B) Molecularity $\rightarrow$ (I) cannot be fraction or zero

Molecularity is the number of species colliding in an elementary step. It is always a whole number ($1, 2$, rarely $3$). It cannot be fractional or zero.

(C) Second half-life of a first order reaction $\rightarrow$ (III) is the same as the first

For first-order reactions, half-life is independent of initial concentration. Every successive half-life remains constant.

(D) $e^{-E_a / RT} \rightarrow$ (IV) fraction of molecules with energy $\geq$ activation energy

From Arrhenius equation, this exponential term represents the fraction of molecules energetic enough to react.