Environment & Ecology · Environmental Science
Arrange the following disinfection methods in order of their historical adoption for large-scale municipal drinking water treatment (from earliest to latest): A. Boiling/steam sterilization B. Chlorination using Cl2 and hypochlorites C. Ozonation D. Ultraviolet (UV) radiation
- 1C → B → A → D
- 2A → D → B → C
- 3B → A → D → C
- 4A → B → C → D✓
Correct answer
A → B → C → D
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