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Biology · PYQ NEET UG 2016(2)

हिन्दी

Biological Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from

  1. domestic sewage
  2. dairy industry
  3. petroleum industry
  4. sugar industry

Correct answer · Option 3

petroleum industry

Explanation

BOD measures biodegradable organic matter. Petroleum industry effluents contain non-biodegradable or toxic chemical pollutants, making BOD an ineffective index for such water bodies.

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