Biochemical oxygen demand (BOD) in a river water (a) has no relationship with concentration of oxygen in the water (b) gives a measure of Salmonella in the water (c) increases when sewage gets mixed with river water (d) remains unchanged when algal bloom occurs.

Biochemical oxygen demand (BOD) in a river water

(a) has no relationship with concentration of 

oxygen in the water

(b) gives a measure of Salmonella in the water

(c) increases when sewage gets mixed with river 

water

(d) remains unchanged when algal bloom occurs.
by

1 Answer

Answer :

(c) increases when sewage gets mixed with river 

water
by

Related questions

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