Time required to decompose half of the substance for \( \mathrm{n}^{\text {th }} \) order reacti...

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Time required to decompose half of the substance for \( \mathrm{n}^{\text {th }} \) order reaction is inversely proportional to
(A) \( a^{\mathrm{n}+1} \)
(B) \( a^{n-1} \)
(C) \( a^{\mathrm{n}-2} \)
(D) \( a^{\text {n }} \)
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