State PCS PYQPrelims 2023
UPPCS · प्रश्न 110
Biological Oxygen Demand (BOD) is a standard criterion for:
- AMeasuring O2 level in blood
- BPollution assay in aquatic ecosystems
- CAssaying O2 level in high altitude regions
- DComputing O2 level in forest ecosystems
उत्तर देखें और व्याख्या
उत्तर: (B) Pollution assay in aquatic ecosystems
व्याख्याBOD measures oxygen needed by microbes to decompose organic matter in water, a key water-pollution index.
