science easy mcq

BOD stands for:

  1. Biological Oxygen Demand
  2. Biochemical Oxygen Demand
  3. Bacterial Oxygen Demand
  4. Basic Oxygen Demand

Answer: Biochemical Oxygen Demand

BOD measures oxygen required by microbes to decompose organic matter in water. High BOD indicates severe pollution. Critical parameter in water quality assessment. [[CPCB Guidelines, NCERT Biology Class 12]]

Topic Environmental Science - Water Pollution
Exam Relevance SSC MTS, Railway Group D, Banking Clerk

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