Multiple choice Which of the following matches is incorrect? Barfoed’s reagent: Conc. HCl + anhydrous ZnCl2 Baeyer’ reagent – dilute alkaline KMnO4 Nessler’s reagent – alkaline solution of K2HgI4 Etard’s reagent – CrO2Cl2 Fenton’s reagent: FeSO4 + H2O2 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Barfoed's reagent consists of a 0.33 molar solution of neutral copper acetate (Cu(CH3COO)2) in 1% acetic acid (CH3COOH) solution. Lucas' reagent is a solution of anhydrous zinc chloride (ZnCl2) in concentrated hydrochloric acid (HCl).