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How is the amount of biodegradable organic matter in sewage water estimated?

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in Biology – Class 12 by (271k points)
How is the amount of biodegradable organic matter in sewage water estimated?

(a) Chemical Oxygen Demand

(b) Physical Oxygen Demand

(c) Biological Oxygen Demand

(d) Mathematical Oxygen Demand

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The question is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

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Correct answer is (c) Biological Oxygen Demand

The best I can explain: The amount of biodegradable organic matter in sewage water estimated with the help of biological oxygen demand. It is used for indicating the organic strength of wastewater. It is designated as BOD.

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