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Which reagent pair reduces the carbonyl group to a CH2 group in the Clemmensen reduction?
ASodium borohydride
BLiAlH4 in dry ether
CZn-Hg and conc. HCl
DHydrazine and KOH
Answer & Solution
Correct answer: C. Zn-Hg and conc. HCl
Zinc amalgam in strong acid removes the carbonyl oxygen completely, leaving a methylene group.
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