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प्रश्न
Biochemical oxygen Demand value less than 5 ppm indicates a water sample to be ______.
पर्याय
highly polluted
poor in dissolved oxygen
rich in dissolved oxygen
low COD
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उत्तर
Biochemical oxygen Demand value less than 5 ppm indicates a water sample to be rich in dissolved oxygen.
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संबंधित प्रश्न
Haemoglobin of the blood forms carboxy haemoglobin with ______.
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Reason(R): High biological oxygen demand means high activity of bacteria in water.
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