BOD stands for : A)Biological oxidation demand B)Biological oxygen demand C)Biochemical oxygen demand D) Biotic oxidation demand
Option C) BOD stands for Biochemical Oxygen Demand. It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period. The BOD value is most commonly expressed in milligrams of oxygen consumed per litre of sample during 5 days of incubation at 20°C.
