The BOD value of clean water is:
Correct answer: A. < 5 ppm
- A. < 5 ppm
- B. < 15 ppm
- C. > 15 ppm
- D. > 17 ppm
Explanation
Biochemical Oxygen Demand (BOD) is a measure of the amount of oxygen required by aerobic bacteria to decompose organic waste in water. Clean, unpolluted water has a very low amount of organic waste, resulting in a low BOD value, typically less than 5 ppm.
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