OSMT (Ontario Society of Medical Technologists) Practice Exam

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What is included in the group of Halogens?

Lysol
Ethylene oxide
Formaldehyde
None of the above

The correct answer is: Ethylene oxide

The correct answer is that none of the provided options includes a halogen. Halogens are a specific group of elements in the periodic table that includes fluorine, chlorine, bromine, iodine, and astatine. These elements are known for their reactivity and ability to form salts when they react with metals. The substances listed—Lysol, ethylene oxide, and formaldehyde—are all chemical compounds used in various applications, particularly for their antimicrobial or sterilizing properties, but they are not classified as halogens. Lysol is a brand name for disinfectant products containing various active ingredients, typically including alcohol and quaternary ammonium compounds. Ethylene oxide is a gas used in sterilization, particularly in healthcare settings, while formaldehyde is a well-known aldehyde used in preservation and as a disinfectant. Therefore, the response that none of the given choices are halogens is correct, as they do not belong to the halogen family on the periodic table.