How you will distinguish between aldehydes and ketones?
The easiest way to tell between aldehydes and ketones are Tollen reagent test or Fehling solution test:
Tollen reagent test: R-CHO + Ag2O → R-COOH + 2Ag (silver mirror appears)
Fehling solution test: R-CHO + 2CuO → R-COOH + Cu2O (red-coloured precipitate forms)
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