Question
Chemistry Question on Environmental Chemistry
Biochemical Oxygen Demand (BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct ?
A
Aerobic bacteria decrease the BOD value
B
Anaerobic bacteria increase the BOD value
C
Clean water has BOD value higher than 10 ppm
D
Polluted water has BOD value higher than 10 ppm
Answer
Polluted water has BOD value higher than 10 ppm
Explanation
Solution
Polluted water has BOD value higher than 10 ppm Clean water has less than 5 ppm.