A) Amount of \[{{O}_{2}}\]utilized by organisms in water.
B) Amount of\[{{O}_{2}}\]utilized by microorganism's for biological oxidation.
C) Total amount of \[{{O}_{2}}\]present in water.
D) All the above.
Correct Answer: B
Solution :
BOD (Biological Oxygen Demand) is the measure of the extent of pollution. BOD - Biochemical (biological) Oxygen Demand is a test used to measure the concentration of water. It can be used to infer the general quality of the water and its degree of pollution by biodegradable organic matter. It is used in water quality management and assessment, ecology and environmental science. BOD is not an accurate quantitative test and should be considered as providing an indicator of the quality of a water body. Hence, the correct option is (b).
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