BOD is a measure of the amount of dissolved oxygen consumed by aerobic biological organisms (primarily microorganisms) when decomposing organic matter in a sample of water over a specific time period (usually 5 days) at a specific temperature (usually 20°C). It is a key indicator of water quality, reflecting the amount of organic pollution present; higher BOD values indicate more organic pollution.
What is B.O.D.?
Asked in WBCS Main Paper 4 2022 · Topic: Pollution (Water Pollution: Sources, common pollutants, water quality indicators (BOD, COD, DO), effects, control measures.)
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Answer: B. The amount of O₂ utilized by micro-organisms for decomposition
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