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NEET2009BotanyEnvironmental IssuesActual

Biochemical Oxygen Demand (BOD) in a river water :

Options

  1. AIncreases when sewage gets mixed with river water
  2. BRemains unchanged when algal bloom occurs
  3. Chas no relationship with concentration of oxygen in the water
  4. DGives a measure of Salmonella in the water

Correct answer

A. Increases when sewage gets mixed with river water

Step-by-step solution

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