JEE Main Chemistry question

CH₃CH₂OH --Cu, 573 K--> X --[O]--> Y --Br₂/P--> BrCH₂COOH. Reactions I, II and III respectively are

(A)Reduction, oxidation and substitution
(B)Dehydration, oxidation and substitution
(C)Dehydrogenation, oxidation and substitutionCorrect
(D)Dehydrogenation, oxidation and elimination

Answer: (C)

Solution

Ethanol passed over hot copper (Cu, 573 K) is dehydrogenated (loses H₂) to acetaldehyde, X (reaction I: dehydrogenation). Acetaldehyde is oxidized ([O]) to acetic

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Question ID VK-149525