NEET Chemistry Alkenes MCQ Question
Which chemical reaction is used to test the presence of unsaturation in alkenes?
Reaction with cold, dilute KMnO4
Reaction with concentrated H2SO4
Oxidation with acidic potassium dichromate
Addition of HBr in the presence of peroxide
Correct Answer
Detailed Explanation
The reaction of alkenes with cold, dilute potassium permanganate (Baeyer's reagent) results in the formation of vicinal glycols and decolorization of KMnO4, which is used as a test for unsaturation.
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