Question

Water sample is reported to be highly polluted if BOD (Biological Oxygen Demand) value of sample becomes

• A. more than 17 ppm
• B. equal to 10 ppm
• C. equal to 5 ppm
• D. less than 5 ppm

Answer 1

Answer: (A)

Water sample is reported to be highly polluted if BOD value of sample is more than 17 ppm.