The chemical oxygen demand (COD)measures the

1.	The chemical oxygen demand (COD)measures the
A.	amount of oxygen required for growth of microorganisms in water
B.	amount of oxygen that would be removed from the water in order to oxidize pollution
C.	amount of oxygen required to oxidize the calcium present in waste water
D.	none of the above
Answer» C. amount of oxygen required to oxidize the calcium present in waste water

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The chemical oxygen demand (COD)measures the

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