Biochemical Oxygen Demand (BOD) in a river water

Biochemical Oxygen Demand (BOD) in a river water
  • A. Increases when sewage gets mixed with river water
  • B. Remains unchanged when algal bloom occurs
  • C. Has no relationship with concentration of oxygen in the water
  • D. Gives a measure of salmonella in the water
  • Correct Answer: Option A
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