Civil Engineering > GATE 2017 SET-1 > Environmental Engineering
The wastewater from a city, containing a high concentration of biodegradable organics, is being steadily discharged into a flowing river at a location S. If the rate of aeration of the river water is lower than the rate of degradation of the organics, then the dissolved oxygen of the river water
A
is lowest at the location S.
B
is lowest at a point upstream of the location S.
C
remains constant all along the length of the river.
D
is lowest at a point downstream of the location S.

Correct : d

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