Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be ………………. .

Biochemical Oxygen Demand, (BOD) is a measure of organic material pres

1.	Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be ………………. .
Answer» rich in dissolved oxygen. POOR in dissolved oxygen. HIGHLY polluted. not suitable for AQUATIC life Solution :The total amount of oxygen consumed by micro-organisms (bacteria) in decomposing organic matter PRESENT in certain volume of a sample of water is called Biochemical Oxygen Demand (BOD) of the water. The BOD is less than 5 ppm then water is considered to be PURE. If BOD is more than 17 ppm then water is highly polluted. Thus, the water having BOD less then 5 ppm is rich in dissolved oxygen.