Question

BOD refers to

• A. The amount of oxygen consumed if all the organic matter in $1000ml$ of water were oxidized by bacteria
• B. The amount of oxygen released when all the organic matter was consumed by bacteria in $1$ litre of water
• C. The oxygen required for bacteria to grow in $1$ litre of effluent
• D. The amount of oxygen released if all the organic matter in $1000ml$ of water were oxidized by bacteria

Answer 1

The correct option is A The amount of oxygen consumed if all the organic matter in $1000ml$ of water were oxidized by bacteria

• Biochemical oxygen demand acts as an indicator of the growing pollution in the marine environment.
• It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample of 1000ml at certain temperature over a specific time period.

Thus, the correct answer is an option (A).