Civil Engineering - Waste Water Engineering - Discussion

11. 

Pick up the correct statement from the following :

[A]. In treated sewage, 4 PPm of D.O. is essential
[B]. Only very fresh sewage contains some dissolved oxygen
[C]. The solubility of oxygen in sewage is 95% that is in distilled water
[D]. All the above.

Answer: Option D

Explanation:

No answer description available for this question.

Mani said: (Sep 4, 2018)  
Please explain.

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