Question

Increase in BOD in water leads to
(a) Increase in dissolved oxygen concentration
(b)Decrease in dissolved O2 concentration
(c) Maintenance of dissolved O2 concentration at the same level
(d) No effect on dissolved O, concentration.​

Answer 1

The answer is

a) increase in dissolved oxygen concentration.

Answer 2

Answer:  option b

as BOD increases water become more polluted that is dissolved oxygen will decrease

Explanation: