If a sewer carrying a discharge of 3 cumec outfalls into a river having a discharge of 10 cumec and DO equal to 9.1 mg/L the resultant DO of the mix is

If a sewer carrying a discharge of 3 cumec outfalls into a river havin

1.	If a sewer carrying a discharge of 3 cumec outfalls into a river having a discharge of 10 cumec and DO equal to 9.1 mg/L the resultant DO of the mix is
A.	7 mg/L
B.	5 mg/L
C.	6 mg/L
D.	8 mg/L
Answer» B. 5 mg/L

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If a sewer carrying a discharge of 3 cumec outfalls into a river having a discharge of 10 cumec and DO equal to 9.1 mg/L the resultant DO of the mix is

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