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GATE Civil Engineering 2016 Paper 2

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Question : 62

Total: 65

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 _________

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