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If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is
🗓 Jul 16, 2021
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Jennifer
🌐 India
Hello, please post an solution as well
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Muskaan
🌐 India
Nice website
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