MDCAT Chemistry MCQ #303

A chemist uses Fehling's solution to differentiate between various aldehydes. Which aldehyde fails to produce a red precipitate of cuprous oxide?

MDCAT Chemistry MCQ #303

  1. Question 1

    Q1. A chemist uses Fehling's solution to differentiate between various aldehydes. Which aldehyde fails to produce a red precipitate of cuprous oxide?

    • A) Acetaldehyde
    • B) Benzaldehyde
    • C) Formaldehyde
    • D) Propanal

    Answer: Benzaldehyde

    Explanation: Benzaldehyde is an exception that does not reduce Fehling's solution. Aliphatic aldehydes like acetaldehyde successfully reduce the copper(II) complex to red Cu2O.