Question

Which of the following statements is not true regarding BOD?

• A. Sewage water is treated until the BOD is reduced.
• B. BOD is a measure of organic matter present in the water
• C. Greater the BOD, lesser is the polluting potential of water
• D. BOD measures the rate of uptake of oxygen

Answer 1

Answer:

C. Greater the BOD, lesser is the polluting potential of water

• The sewage water is treated until the BOD is reduced.

• The BOD test measures the rate of uptake of oxygen by micro-organisms in a sample of water and thus, BOD is indirectly a measure of the organic matter present in the water.

• The greater the BOD of waste-water more is its polluting potential.