MHT CET 2026 Chemistry question

Which of the following reaction steps is known as propagation step

(A)Cl-Cl \rightarrow Cl^* + Cl^*
(B)CH_3^* + Cl_2 \rightarrow CH_3-Cl + Cl^*Correct
(C)CH_3^* + Cl^* \rightarrow CH_3-Cl
(D)CH_3^* + CH_3^* \rightarrow CH_3-CH_3

Answer: (B)

Solution

Free radical chlorination of methane has three stages. Initiation: homolysis of to give radicals, as in (A). Propagation: a radical reacts with a molecule to give a product and a new radical that carries the chain forward,

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Question ID VK-101462