Environmental Sciences, asked by hamanta12345, 10 months ago

Biological oxygen Demand (BOD) is the least in which of the following--
1) Sewage.
2)Seawater.
3)Potable water/ pure water.
4) Polluted water.

Answers

Answered by zaara1436

Biochemical oxygen demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.

Answered by arshikhan8123

Answer:

Biological oxygen Demand (BOD) is the least in 3)Potable water/ pure water.

Explanation:

The amount of dissolved oxygen required (i.e., requested) by aerobic biological organisms to break down organic material present in a given water sample at a particular temperature during a certain time period is known as the biochemical oxygen demand (BOD; also known as biological oxygen demand).
BOD and COD both measure the concentration of organic chemicals in water and serve a similar purpose.
The BOD test presents the most time-related barrier since a BOD sample must be held for 48 hours after collection.

Therefore, because potable water contains fewer organic compounds than dirty water, its BOD is lower.

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