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Question: Answered & Verified by Expert
Measuring Biochemical Oxygen Demand (BOD) is a method used for
BiologyMicrobes in Human WelfareNEETNEET 2012 (Screening)
Options:
  • A estimating the amount of organic matter in sewage water
  • B working out the efficiency of oil driven automobile engines
  • C measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale
  • D working out the efficiency of RBCs about their capacity to carry oxygen
Solution:
2388 Upvotes Verified Answer
The correct answer is: estimating the amount of organic matter in sewage water
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 $20^{\circ} \mathrm{C}$ for the microorganisms to metabolise organic waste.

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