MCQ
The reagent used in Wolff-Kishner reduction is
  • $NH _2- NH _2$ and $KOH$ in ethylene glycol
  • B
    $Zn - Hg /$ conc. $HCl$
  • C
    $NaBH _4$
  • D
    $Na - Hg / H _2 O$

Answer

Correct option: A.
$NH _2- NH _2$ and $KOH$ in ethylene glycol
(a) : Wolff-Kishner reduction: The carbonyl group of aldehydes and ketones is reduced to $CH _2$ group on treatment with hydrazine followed by heating with sodium or potassium hydroxide in high boiling solvent such as ethylene glycol.
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