Potassium tetraoxomanganate (VII) is often added to impure water to?
A.
reduce organic impurities
B.
reduce inorganic impurities
C.
destroy bacteria and algae
D.
remove permanent hardness
Correct Answer: Option C
Explanation
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.
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