The temperature of 20°C is used to take BOD of _________
(a) 7-days
(b) 10-days
(c) 5- days
(d) 1-day
I had been asked this question by my school principal while I was bunking the class.
This intriguing question originated from Effluent topic in division Recovery and Purification of Fermentation Products, Effluent Treatment, Bioreactor Design Considerations of Fermentation Technology