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Pick out the wrong statement. | |
A. | Biological oxygen demand (BOD) is a characteristic and not a constituent of water. [Wrong Answer] |
B. | BOD is a measure of the amount of oxygen which will be demanded & used in 5 days by the biological decomposition of the organic matter present in water stream present as food for the living organism. [Wrong Answer] |
C. | BOD is expressed in mg/litre (typically, BOD=2.5 mg/litre for potable water). [Wrong Answer] |
D. | none of these [Correct Answer] |