NextMockपरीक्षा शोधा, उदा. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2023

UPPCS · प्रश्न 110

Biological Oxygen Demand (BOD) is a standard criterion for:

  1. Measuring O2 level in blood
  2. Pollution assay in aquatic ecosystems
  3. Assaying O2 level in high altitude regions
  4. Computing O2 level in forest ecosystems
उत्तर दाखवा आणि स्पष्टीकरण

उत्तर: (B) Pollution assay in aquatic ecosystems

स्पष्टीकरण

BOD measures oxygen needed by microbes to decompose organic matter in water, a key water-pollution index.