Mining Engineering > GATE 2026 > Mine Environment - BOD Test
In a biochemical oxygen demand (BOD) test, 15 ml of wastewater sample was diluted with distilled water to completely fill a 300 ml BOD bottle and incubated at 20 °C for 5 days. The dissolved oxygen (DO) level before and after incubation are 9.2 mg liter-1 and 4.4 mg liter-1, respectively. The BOD of the sample, in mg liter-1, is _______________. (answer in integer)
Correct : 96
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