JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which is universally correct for a catalyst?

(A)A catalyst remains unchanged chemically at the end of a chemical reactionCorrect
(B)A catalyst takes part in a chemical reaction
(C)All kinds of catalysts undergo catalytic poisoning
(D)A catalyst physically changes at the end of a reaction

Answer: (A)

Solution

While a catalyst may be physically altered (e.g. a lump becoming powder) and does interact with reactants during the reaction, the one universally true statement is that

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Question ID VK-144962