Baeyer’s reagent is (A) Alkaline KMnO4solution (B) Acidic KMnO4solution (C) Neutral KMnO4solution (D) Aqueous bromine solution

Answer: (A)

Explanation: Baeyer’s reagent is a cold potassium permanganate solution in an alkaline solution with a violet colour. It has a high oxidising power. When this solution comes into contact with a double bond chemical, the colour fades and the solution turns colourless.

KMnO₄has the following properties:

• It dissolves in water to produce a bright pink or purple solution.
• It leaves prismatic purplish-black sparkling crystals after evaporation.