Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by

Pick out the wrong statement.

Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?

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