NEETZoologyMicrobes in Human Welfare
What does BOD refer to?
Options
- AThe amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidised by b
- BThe rate of uptake of oxygen by micro-organisms in a sample of water
- CThe pollution potential of waste water
- DThe physical removal of particles
Correct answer
A. The amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidised by b
Step-by-step solution
by bacteria BOD (Biochemical oxygen demand) refers to the amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidised by bacteria. The sewage water is treated till the BOD is reduced. The BOD test measures the rate of uptake of oxygen by micro-organisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water. The greater the BOD of waste water, more is its polluting potential.