Question
Biological Oxygen Demand (BOD) is a standard criterion for -
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Biological Oxygen Demand (BOD) is a standard criterion for -
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• Correct Answer: C
• BOD measures dissolved oxygen consumed by aerobic microbes decomposing organic matter in water; standard index for aquatic pollution.
• High BOD indicates organic pollution and threatens aquatic life; clean water has BOD < 1 mg/L.
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