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Biological Oxygen Demand (BOD) is a standard criterion for

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UPSC Civil Services (Prelims) General Studies Official Paper-I (Held In: 2017)
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  1. Measuring oxygen levels in blood
  2. Computing oxygen levels in forest ecosystems
  3. Pollution assay in aquatic ecosystems
  4. Assessing oxygen levels in high altitude regions

Answer (Detailed Solution Below)

Option 3 : Pollution assay in aquatic ecosystems
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The Correct Answer is Option 3 i.e Pollution assay in aquatic ecosystems.

  • Biological Oxygen Demand (BOD):
    • It is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at a certain temperature over a specific time period to break down organic material present in that water.
    • BOD is often used in wastewater-treatment plants and is used as an index of the degree of organic pollution in water.

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