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Select the correct statements regarding dissolved Oxygen and Biochemical Oxygen Demand. (A) BOD is inversely related to dissolved oxygen. (B) Low dissolved oxygen and high BOD lead to loss of aquatic life. (C) High BOD leads to high dissolved oxygen. (D) Both BOD and dissolved oxygen are indicator of health of a water body. (E) Both BOD and dissolved oxygen are affected by amount of organic matter in the water body. Choose the most appropriate answer from the options given below:
A
(A), (B), (C), (E) only
B
(A), (B), (D), (E) only
C
(A), (B), (C), (D) only
D
(B), (C), (D), (E) only
Detailed Solution
BOD is inversely related to dissolved oxygen (A is correct); low dissolved oxygen combined with high BOD leads to loss of aquatic life (B is correct); both BOD and dissolved oxygen are indicators of water body health (D is correct) and are both affected by the amount of organic matter present (E is correct). High BOD actually leads to LOW dissolved oxygen, not high (C is incorrect). So A, B, D, E only.