A) remain same
B) decrease
C) increase
D) both (b) and (c)
Correct Answer: C
Solution :
BOD is the amount of oxygen required for biological oxidation by micro-organisms in a unit volume of water (at 20°C for 5 days). Addition of sewage/waste causes increase in microbial activity, depletion in oxygen levels which leads to increase in BOD (Biological Oxygen Demand).You need to login to perform this action.
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