Topic: Biodiversity: concept, patterns, importance, loss· Ecology and Environment

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

1. dairy industry

2. petroleum industry

3. sugar industry

4. domestic sewage

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 2 neet Save WhatsApp Report

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Answer: 2. petroleum industry

BOD measures the oxygen needed by microbes to break down organic matter, so it is a good index for organic wastes such as dairy, sugar and domestic sewage.

Petroleum industry waste is mostly hydrocarbons and toxic chemicals that microbes cannot easily break down, so BOD does not show its pollution well.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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

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