What is the amount of oxygen required by bacteria to break down organic matter present in certain volume of sample of water is called?

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Class 11 Chemistry Practice Test: Environmental Chemistry - Water Pollution — practice the complete quiz, review flashcards, or try a random question.

Water pollution (or aquatic pollution) is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water pollution is either surface water pollution or groundwater pollution. Pollution is the result of the cumulative effect over time. Pollution may take the form of toxic substances (e.g., oil, metals, plastics, pesticides, persistent organic pollutants, industrial waste products), stressful conditions (e.g., changes of pH, hypoxia or anoxia, increased temperatures, excessive turbidity, changes of salinity), or the introduction of... Show more

What is the amount of oxygen required by bacteria to break down organic matter present in certain volume of sample of water is called?