Wyoming Pesticide Applicator Certification Practice Test

Which hazard class has a toxicity concern where a small to medium dose could cause death or illness?

1. Highly toxic, Hazard Class I

2. Moderately toxic Hazard Class II

3. Slightly toxic Hazard Class III

4. CAUTION, Hazard Class IV

The correct answer is: Moderately toxic Hazard Class II

Option A (Highly toxic) While this option may seem like a correct answer at first glance, it is important to note that the question specifically mentions a "small to medium dose" as causing death or illness. The Hazard Class I category is reserved for substances that have a high degree of toxicity and pose a major health hazard, where even a small amount can potentially cause death or severe injury. Option C (Slightly toxic): This option can be eliminated because it does not match the description provided in the question. Hazard Class III substances are considered slightly toxic and pose a moderate health hazard, so a small to medium dose would likely not lead to death or severe illness. Option D (CAUTION): Hazard Class IV substances are labeled with the CAUTION symbol and are considered the least toxic category, with the potential to cause minor or moderate health effects at most. It is unlikely that a small to medium dose of a Hazard Class IV substance would lead to death or severe illness. Therefore, the correct answer is B (Moderately toxic). Substances in Hazard Class II are considered moderately toxic and have the potential to cause death or severe illness at relatively low doses, making it the most appropriate choice for a substance that can be harmful even in small to