Nebraska Barber State Practice Exam

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To be effective, a dry sanitizer must contain:

  1. Hydrogen peroxide solution

  2. 60% grain alcohol

  3. Disinfectant solution

  4. Formaldehyde fumes

The correct answer is: Formaldehyde fumes

The other options listed as choices are incorrect because they do not meet the requirement for a dry sanitizer to be effective. Hydrogen peroxide solution, while it can act as a sanitizer, is typically used in liquid form and not in a dry form. 60% grain alcohol is also not a commonly used ingredient in dry sanitizers and is mainly used in liquid hand sanitizers. Disinfectant solutions typically contain water and are not considered dry. Formaldehyde fumes are often used as a dry sanitizer as they can effectively kill bacteria and viruses on surfaces. Therefore, it is the most suitable answer for an effective dry sanitizer.

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