A catalyst is a substance which | vedclass

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(D) catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. It provides an alt

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Participates in the reaction and provides an easier pathway for the same

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(D) catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. It provides an alternative reaction pathway with a lower activation energy. Therefore,option $D$ is the most accurate description as it participates in the reaction mechanism (forming intermediates) but is regenerated at the end.

$A$ catalyst is a substance which

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