Question

BOD stands for

Answer 1

BOD

• It stands for Biochemical Oxygen Demand.
• “The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called Biochemical Oxygen Demand”

BOD value of water

• A BOD number of less than $5\text{ppm}$ indicates that the water is clean.
• A BOD value of $17\text{ppm}$ or above indicates that the water is extremely polluted.

Hence BOD stands for Biochemical Oxygen Demand.