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Chemical Engineering - Environmental Engineering - Discussion

Discussion Forum : Environmental Engineering - Section 5 (Q.No. 8)
Environmental Engineering
8.
Pick out the wrong statement.
Biological oxygen demand (BOD) is a characteristic and not a constituent of water.
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.
BOD is expressed in mg/litre (typically, BOD=2.5 mg/litre for potable water).
none of these
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