Environmentalmedium · Past Paper
Which of the following describes 'Biochemical Oxygen Demand' (BOD) best?
AHigher BOD means less pollution
BHigher BOD means more organic pollution
CBOD is independent of pollution
DBOD measures inorganic salts only
✓ Correct Answer: B — Higher BOD means more organic pollution
High BOD indicates that more oxygen is being consumed by microbes to break down high levels of organic waste, signaling polluted water.
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