BOD in river water_________
A. Remains unchanged when algal bloom occurs
B. Increases when sewage gets mixed up with river water
C. Has no relationship with concentration of Oxygen in water
D. Give a measure for Salmonella in water
Answer:B
BOD in river water_________
A. Remains unchanged when algal bloom occurs B. Increases when sewage gets mixed up with river water C. Has no relationship with concentration of Oxygen in water D. Give a measure for Salmonella in water