Wyoming Pesticide Applicator Practice Test 2026 – Complete Exam Prep

"Incompatible" means that two or more materials cannot be mixed or used together. This means that they have properties that are not compatible and could result in negative reactions when combined. Option A, "Inert Ingredients," refers to substances that are not chemically reactive and do not contribute to the intended function of a product. This definition is unrelated to the meaning of "incompatible." Option B, "Inoculum," refers to a sample of microorganisms used to start a culture. This definition is also unrelated to the meaning of "incompatible." Option C, "Inhalation Toxicity," refers to the potential harm that can be caused by inhaling a substance. While this definition may hint at the danger of certain materials being "incompatible," it does not fully capture the definition. Overall, the best answer is D as it accurately defines "incompatible" and distinguishes it from the other options given.