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JEE Main Chemistry question

ChemistryOrganic Chemistry - Some Basic Principles and TechniquesJEE Main

Which step is the chain propagation step in the following mechanism? (i) Cl₂ →(hν) Cl• + Cl• (ii) Cl• + CH₄ → •CH₃ + HCl (iii) Cl• + Cl₂ → Cl₂ + Cl• (iv) •CH₃ + Cl• → CH₃Cl

Answer: (B)

Solution

Step (ii), where a chlorine radical abstracts H from methane to generate a new radical (•CH₃) while consuming the original radical, is a

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Question ID VK-139845