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Question
Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD of less than 5 ppm indicates a water sample to be:
Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD of less than 5 ppm indicates a water sample to be:
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Solution
The correct option is A Rich in dissolved oxygen
Clean water has BOD which is less than 5 ppm. If it is equal to or more than 12 ppm, then the water is considered as polluted. So this indicates water be rich in dissolved oxygen, that helps the microorganisms to oxidize inorganic and organic materials.
Clean water has BOD which is less than 5 ppm. If it is equal to or more than 12 ppm, then the water is considered as polluted. So this indicates water be rich in dissolved oxygen, that helps the microorganisms to oxidize inorganic and organic materials.
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