Why is potassium permanganate used for purifying drinking water

Why is potassium permanganate used for purifying drinking water?

  1. It kills germs
  2. It dissolves the impurities
  3. It is a reducing agent
  4. It is an oxidizing agent

Answer

Potassium permanganate (KMnO4) oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water.

The correct option is D.