Q2
5 days-biochemical oxygen demand (BOD5) is taken at a temperature of
A.
0°C
B.
15°C
C.
20°C
AnswerD.
25°C
Answer: Option C
Solution
Answer: Option C
Solution:
In waste water engineering, the 5-day biochemical oxygen demand (BOD5) test is typically conducted at a temperature of 20°C. This specific temperature is considered standard for measuring the amount of dissolved oxygen consumed by microorganisms during a 5-day incubation period.
Therefore, the correct completion is: "5 days-Biochemical Oxygen Demand (BOD5) is taken at a temperature of 20°C."