QAL Laws & Regulation Practice Exam

What does the term "chlorpyrifos" signify on a pesticide label?

1. The brand name of the pesticide

2. An inactive ingredient

3. The active ingredient

4. The formulation type

The correct answer is: The active ingredient

The term "chlorpyrifos" signifies the active ingredient in a pesticide formulation. Active ingredients are the key substances responsible for the pesticide's efficacy against pests, meaning they are the components that provide the intended effect, such as controlling insects or diseases. In this case, chlorpyrifos is a widely recognized organophosphate insecticide known for its effectiveness in pest management. Understanding the function of each part of a pesticide label is crucial for proper usage, safety, and compliance with regulations. While brand names identify specific products and formulation types describe how a pesticide is delivered (like liquids or granules), active ingredients indicate the actual chemicals involved in controlling pests. The presence of chlorpyrifos on a label therefore highlights its role as the core agent responsible for pest control within that product.