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Measuring Biochemical Oxygen Demand (BOD) is a method used for:A. estimating the amount of organic matter in sewage waterB. working out the efficiency of oil driven automobile enginesC. measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scaleD. working out the efficiency of RBCs about their capacity to carry oxygen

Answer» Correct Answer - A
Decomposition of organic matter by microbial activity depends on oxygen availability in water. The degree of impurity of water due to the organic matter is measured in terms of BOD (Biochemical Oxygen Demand) or BOD is the oxygen in milligrams required for five days in one litre of water at `20^(@)C` for the microorganisms to metabolise organic waste.


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