JEE Main Chemistry question

Compound X undergoes reduction with LiAlH₄ to yield Y. When vapours of Y are passed over freshly reduced copper at 300°C, X is re-formed. What is Y?

(A)CH₃COCH₃
(B)CH₃CHO
(C)CH₃CH₂OHCorrect
(D)CH₃OCH₃

Answer: (C)

Solution

Passing an alcohol vapour over hot reduced copper at 300°C dehydrogenates it back to the corresponding carbonyl compound; since this regenerates X (the original

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Question ID VK-149191