Q. Measuring Biochemical Oxygen Demand (BOD) is a method used for
A) Working out the efficiency of RBCs about their capacity to carry oxygen
B) Estimating the amount of organic matter in sewage water
C) Working out the efficiency of oil driven automobile engines
D) Measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale
Explanation
[Solution from source] BOD is the amount of oxygen consumed if all the organic matter in one litre of water were oxidised by bacteria, so it measures the organic matter in sewage. It has nothing to do with RBC oxygen carrying, engines, or curd making, which is in any case done by Lactobacillus and not yeast. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.