CBSE 2026 · Region 4 · Set 2 · Q15 · 1 mark
Assertion (A) : For complex reaction, order of reaction is given by the fast step. Reason $\displaystyle (R)$ : Order of reaction is determined experimentally.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Assertion (A) is false, but Reason (R) is true.
Chemical KineticsFactors Influencing Rate of a ReactionUnderstandassertion_reasonmedium
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CBSE Class 12 Chemistry past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.