MHT CET 2026 Chemistry question

Which of the following is an elementary reaction ?

(A)Correct
(B)\mathrm{2NO_2Cl_{(g)} \rightarrow 2NO_{2(g)} + Cl_{2(g)}}
(C)
(D)

Answer: (A)

Solution

An elementary reaction occurs in a single step exactly as written, so its stoichiometric equation shows the molecularity (usually 1 or 2). is a single-step unimolecular reaction (the first step in the decomposition of ozone), so (A) is elementary. The other equations are overall

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Question ID VK-101051