Biochemical oxygen demand (BOD) is a measure | vedclass

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(A) The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called biochemical

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rich in dissolved oxygen

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(A) The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called biochemical oxygen demand $(BOD)$.$BOD$ is a measure of the amount of organic material in water in terms of the oxygen required to break it down biologically.Clean water typically has a $BOD$ value of less than $5 \ ppm$,whereas highly polluted water can have a $BOD$ value of $17 \ ppm$ or more.Therefore,a $BOD$ value less than $5 \ ppm$ indicates that the water sample is clean and rich in dissolved oxygen.

Biochemical oxygen demand $(BOD)$ is a measure of organic materials present in water. $A$ $BOD$ value less than $5 \ ppm$ indicates a water sample to be:

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