Civil Engineering - Waste Water Engineering - Discussion

13. 

For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

[A]. 3 PPm
[B]. 4 PPm
[C]. 5 PPm
[D]. 10 ppm.

Answer: Option B

Explanation:

No answer description available for this question.

Lakha said: (Dec 19, 2014)  
DO is one of the most important constituents of natural water system. At list 4 mg/L of DO is required for game fish.

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