The Biological Oxygen Demand (BOD) of water i | vedclass

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Question

(A) Biological Oxygen Demand $(BOD)$ refers to the amount of dissolved oxygen that would be consumed if all the organic matter in one liter of water w

Vedclass · Accepted Answer

Increased when sewage is mixed with river water.

Vedclass · Answer

(A) Biological Oxygen Demand $(BOD)$ refers to the amount of dissolved oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria.When sewage (which is rich in organic matter) is mixed with river water,the population of aerobic decomposer bacteria increases significantly.These bacteria consume large amounts of dissolved oxygen to break down the organic waste,leading to a sharp increase in the $BOD$ of the water.Therefore,the correct statement is that $BOD$ increases when sewage is mixed with river water.

The Biological Oxygen Demand $(BOD)$ of water is:

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