Iron & manganese present as pollutant in water cannot be removed by___ – McqOptions

MCQOPTIONS

1.	Iron & manganese present as pollutant in water cannot be removed by__________________?
A.	Ion exchange process
B.	Oxidation followed by settling & filtration
C.	Lime soda process or manganese zeolite process
D.	Chlorination
Answer» E.

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