NEET UG · Microbes in Human Welfare · Quiz
5 real NEET UG questions on Microbes in Human Welfare. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.
Question 1 of 5
HARDA sewage treatment plant processes 10,000 liters of wastewater with an initial BOD of 400 mg/L. After primary and secondary treatment, the final BOD is reduced to 20 mg/L. What is the percentage efficiency of BOD removal achieved by the treatment plant?