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The reaction, CH3CHO Zn(Hg) / Conc. HCl CH3CH3

1. Cannizaro's reaction
2. Rosenmund reduction
3. Wolff-Kishner reduction
4. Clemmenson reduction

Correct answer: Clemmenson reduction

Solution

The Clemmensen reduction involves the conversion of aldehydes or ketones to alkanes using zinc amalgam and concentrated hydrochloric acid, which is exactly what occurs in the given reaction.

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