Question

When huge amount of sewage is dumped into a river, the biological oxygen demand will ?

Answer 1

Answer:

(a) increase

(b) decrease

(c) remains same

(d) drastic decrease

Explanation:

the right answer is (a) invrease

Answer 2

Biological Oxygen Demand

Biological Oxygen DemandBiological Oxygen Demand (BOD) and Water.Biochemical oxygen demand (BOD) represents the amount of oxygen consumed by bacteria and other microorganisms while they decompose organic matter under aerobic (oxygen is present) conditions at a specified temperature.