MDCAT Chemistry MCQ #392

Brady's reagent (2,4-dinitrophenylhydrazine) is used to detect the presence of a carbonyl group. What is the characteristic observation of a positive test?

MDCAT Chemistry MCQ #392

  1. Question 1

    Q1. Brady's reagent (2,4-dinitrophenylhydrazine) is used to detect the presence of a carbonyl group. What is the characteristic observation of a positive test?

    • A) Blue precipitate
    • B) Silver mirror
    • C) Yellow or Orange precipitate
    • D) Pale yellow crystalline solid

    Answer: Yellow or Orange precipitate

    Explanation: 2,4-DNP reacts with carbonyls to form yellow or orange-red precipitates. Option D is the color for the Iodoform test.