Question

Which of the following is the test to the determine amount of oxygen needed to oxidize all pollution materials?

• A. Biological Oxygen Demand
• B. Chemical Oxygen Demand
• C. Botanical Oxygen Demand
• D. Physical Oxygen Demand

Answer 1

Answer:

B. Chemical Oxygen Demand

• Chemical Oxygen Demand (COD) is the measure of the amount of oxygen necessary to oxidize all the pollutants present in water.

• The value of the chemical oxygen demand is much higher as compared to the biological oxygen demand.