JEE Main Chemistry question

Which of the following reactions can be used to prepare methane?

(A)Clemmensen reduction
(B)Wurtz reaction
(C)Reduction of CH=CH by LiAlH
(D)Reduction of methyl iodide using a zinc–copper coupleCorrect

Answer: (D)

Solution

The Wurtz reaction necessarily couples two alkyl fragments (giving at minimum ethane from methyl halide, never methane); LiAlH does not reduce simple, unactivated alkene double bonds; Clemmensen

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Question ID VK-142362