A compound 'X' undergoes reaction with $L i A l H_{4}$ to yield another compound 'Y'. When vapours of 'Y' are passed over freshly reduced copper at $300^{o} C$ , 'X' is formed. The compound 'Y' is

C H_{3} C O C H_{3}

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C H_{3} C H O

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C H_{3} C H_{2} O H

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C H_{3} O C H_{3}

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Solution

The correct option is C $C H_{3} C H_{2} O H$
The reduction of acetaldehyde (compound X) with lithium aluminum hydride gives ethanol (compound Y).

Ethanol (compound Y) on oxidation over freshly reduced copper gives back acetaldehyde (compound X).

$C H_{3} C H O X L i A l H_{4} (r e d u c t i o n) - ----------- \to C H_{3} C H_{2} O H Y$

$C H_{3} C H_{2} O H Y C u, 300^{o} C (o x i d a t i o n) - ------------ \to C H_{3} C H O X$

Option C is correct.

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A compound 'X' undergoes reaction with LiAlH4 to yield another compound 'Y'. When vapours of 'Y' are passed over freshly reduced copper at 300oC, 'X' is formed. The compound 'Y' is

A compound 'X' undergoes reaction with $L i A l H_{4}$ to yield another compound 'Y'. When vapours of 'Y' are passed over freshly reduced copper at $300^{o} C$ , 'X' is formed. The compound 'Y' is