What is relationship between BOD and organic matter in sewage ? f
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    Microbes in Human Welfare

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    16. What is relationship between BOD and organic matter in sewage ?

    BOD is directly proportional to the amount of organic matter in sewage that is if the BOD is high the amount of organic matter is also high whereas Low BOD denotes less organic matter.
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    17. Name two gases produced during microbial treatment by sewage.
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