The water pollution in river is measured by the dissolved amount of? Chlorine? Ozone? Nitrogen? Oxygen? [1998] - PMF IAS

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The water pollution in river is measured by the dissolved amount of

Chlorine
Ozone
Nitrogen
Oxygen

Explanation

Option (d) is correct

Water pollution in rivers is commonly measured in terms of Dissolved Oxygen (DO). Dissolved oxygen Answer: (d) Oxygen