Which of the following is not used for disinfection of drinking water?
A
Phenyl
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B
Chloramine
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C
Chlorine
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D
Ozone
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Solution
The correct option is C Phenyl Disinfectant is the chemicals which are mainly used to kill the harmful pathogens without degrading the quality of the substance or changing the nature of the substance to which it is applied.
Chloramine is a water additive used to control microbes, particularly as a residual disinfectant in distribution system pipes.
The gaseous or liquid form of chlorine is a water additive used by municipal water systems to control microbes.
Ozone (O3) is a powerful oxidising agent and an effective primary disinfectant. This oxygen-rich molecule is pumped into water systems to eliminate biological contaminants like bacteria, viruses, Giardia, Cryptosporidium and organic chemicals. It is also effective for oxidising and removing iron, sulphur, manganese, and other inorganic substances.