Question

Biochemical oxygen demand is
(A) Measure of the dissolved oxygen, required by micro-organism to oxidize biological pollutants
(B) Measure of the dissolved oxygen, required by micro-organism for reduction of biological
pollutants
(C) Both of the above
(D) None of the above​

Answer 1

Answer:

Option A is the correct answer

Answer 2

Option C

Biochemical oxygen demand 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.