Which compound restores the pink colour of Schiff's reagent but does not reduce Fehling's solution?

Aethanal
Bacetophenone
Cbenzaldehyde
Dpropanone

Answer: C

Aldehydes restore the colour of decolourised Schiff's reagent. Ethanal and benzaldehyde both do so, but only aliphatic ethanal reduces Fehling's solution. The ketones do not restore the pink colour.

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