Q. The amount of biodegradable organic matter in sewage water can be estimated by measuring
A) Biological oxygen demand
B) Biochemical oxygen demand
C) The growth of microorganisms in water
D) The growth of bacteria in water
Explanation
Biochemical Oxygen Demand (BOD) is the amount of oxygen used for biochemical oxidation by microorganisms in a unit volume of water. Polluted water has high BOD. Thus, when sewage gets mixed with river water, BOD will increase
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.