In a BOD test, 5 ml of wastewater is diluted with pure water to fill a – McqOptions

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1.	In a BOD test, 5 ml of wastewater is diluted with pure water to fill a 300 ml BOD bottle. The initial and final dissolved oxygen contents of the mix are 9.0 mg/l and 7.0 mg/l respectively. The BOD of the wastewater, in mg/l, is
A.	2
B.	10
C.	120
D.	600
Answer» D. 600

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