Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of_________________?
Correct answer: A. All A., B. & C.
- A. All A., B. & C.
- B. Chlorine or its compounds
- C. Ultraviolet light for irradiation of water
- D. Ozone and iodine
Explanation
Water can be disinfected using chemical oxidants such as chlorine, ozone, or iodine, and by physical irradiation with ultraviolet light. Since each listed method can destroy pathogens, the combined option is correct.
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