Question:
The BOD of highly polluted water is
The BOD of highly polluted water is
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High BOD = High Dirt = Low Oxygen for Fish.
Updated On: May 5, 2026
- 17 ppm
- 10 ppm
- 8 ppm
- 12 ppm
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The Correct Option is A
Solution and Explanation
Step 1: Concept Biological Oxygen Demand (BOD) measures the amount of dissolved oxygen needed by aerobic organisms to break down organic matter in water.
Step 2: Meaning High BOD values indicate a high concentration of organic waste and low water quality.
Step 3: Analysis Clean water has a BOD of less than 5 ppm. Highly polluted water typically has BOD values of 17 ppm or higher.
Step 4: Conclusion Among the choices, 17 ppm represents the highest level of pollution.
Final Answer: (A)
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