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Question: Answered & Verified by Expert
In Clemmensen reduction, carbonyl compound is treated with
ChemistryHydrocarbonsAIIMSAIIMS 2014
Options:
  • A zinc amalgam $+\mathrm{HCl}$
  • B sodium amalgam $+\mathrm{HCl}$
  • C zinc amalgam $+\mathrm{HNO}_3$
  • D sodium amalgam $+\mathrm{HNO}_3$.
Solution:
1615 Upvotes Verified Answer
The correct answer is: zinc amalgam $+\mathrm{HCl}$
In Clemmensen reduction, the carbonyl group of aldehydes and ketones is reduced to $\mathrm{CH}_2$ group on treatment with zinc amalgam and concentrated hydrochloric acid.
$\bar{C}=\mathrm{O} \frac{\mathrm{Zn}-\mathrm{Hg}}{\mathrm{HCl}}, \mathrm{CH}_2+\mathrm{H}_2 \mathrm{O}$

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