JAMB - Chemistry (1998 - No. 12)
Potassium tetraoxomanganate (VII) is often added to impure water to?
reduce organic impurities
reduce inorganic impurities
destroy bacteria and algae
remove permanent hardness
Uitleg
Potassium permanganate is a point-of-entry treatment method that oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water. It can also be used to control iron bacteria growth in wells.