What should be the amount of BOD in the drinking water?
A. More than 1 ppm
B. Less than 1 ppm
C. 5 ppm
D. 10 ppm
Answer:B
What should be the amount of BOD in the drinking water?
A. More than 1 ppm B. Less than 1 ppm C. 5 ppm D. 10 ppm