NEET2012ZoologyMicrobes in Human WelfareActual
Measuring Biochemical Oxygen Demand (BOD) is a method used for
Options
- Aestimating the amount of organic matter in sewage water
- Bworking out the efficiency of oil driven automobile engines
- Cmeasuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale
- Dworking out the efficiency of RBCs about their capacity to carry oxygen
Correct answer
A. estimating the amount of organic matter in sewage water
Step-by-step solution
Decomposition of organic matter by microbes requires oxygen. The degree of impurity of water due to 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.