Which of the following is not a chemical used in disinfection?

Hydrogen peroxide is not typically classified as a conventional disinfectant in the same category as the other options listed. Chloramine, chlorine, and chlorine dioxide are all widely recognized chemical agents used for water disinfection processes. They effectively kill bacteria, viruses, and other microorganisms, playing a crucial role in maintaining water safety and quality.

Chloramine is a compound formed when ammonia is added to chlorine, providing a longer-lasting disinfectant in water systems compared to chlorine alone. Chlorine is one of the most common disinfectants due to its strong oxidative properties, while chlorine dioxide is a powerful disinfection agent primarily used in water treatment for its effectiveness against bacteria and viruses at lower concentrations.

In contrast, while hydrogen peroxide does have some disinfectant properties and can be used in specific applications for surface sanitation and certain types of water treatment, it is not as commonly used for large-scale water disinfection as the others. This distinction is essential in understanding the role of various chemicals in water treatment processes, particularly in the context of disinfection strategy selection.