Question of the Day 16-01-2021

Question of the Day
GATE 2016   CE   Question No. 162

For a wastewater sample, the three-day biochemical oxygen demand at incubation temperature of 20°C (BOD3day, 20°C) is estimated as 200 mg/L. Taking the value of the first order BOD reaction rate constant as 0.22 day-1, the five-day BOD (expressed in mg/L) of the wastewater at incubation temperature of 20°C (BOD5day, 20°c) would be _________