Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 4 (Q.No. 5)
5.
In a BOD test, 5 ml of waste is added to 295 ml of aerated pure water. Initial dissolved oxygen (D.O) content of the diluted sample is 7.8 mg/l. After 5 days of incubation at 20°C, the D.O. content of the sample is reduced to 4.4 mg/l. The BOD of the waste water is :
Discussion:
14 comments Page 2 of 2.
Abhishek said:
4 years ago
Df = 295÷5
Bod = (intial Do-final DO) * D.F,
= 200.6.
Bod = (intial Do-final DO) * D.F,
= 200.6.
Sachin s Naik said:
6 years ago
The correct answer is 200.6mg/l.
Manisha nimje said:
6 years ago
The correct answer is 204 mg/l.
Priyanka said:
9 years ago
The correct answer is 204.
(1)
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