Two organic compounds \(A\) and \(B\) were treated with a few drops of Fehling's solutions respectively. \(A\) formed a brick-red precipitate while \(B\) remained unaffected. The compound \(K\) is an ____________
A. alkanol B. alkane C. alkanal D. alkenone
Correct Answer: C
Explanation
alkanals and alkanones have many reactions in common. However, alkanals have oxidizable hydrogen atom while alkanones do not. Thus, alkanals show reactions with mild oxidizing agent (such as Fehling's reagent) while alkanones do not.
