North Carolina Pesticide Application Practice Test

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What are the two types of closed mixing and loading systems?

Mechanical System and Water-Soluble Packaging
Manual System and Liquid System
Chemical System and Dry System
Open System and Semi-Closed System

The correct answer is: Mechanical System and Water-Soluble Packaging

The two types of closed mixing and loading systems are indeed the mechanical system and water-soluble packaging. A mechanical system is designed to automate the mixing of pesticides, minimizing the risk of human exposure to the chemicals during the loading process. This type of system is typically connected to a pesticide supply and uses physical mechanisms to precisely measure and mix the necessary quantities for application. Water-soluble packaging refers to pre-packaged pesticide formulations that dissolve in water. This method allows for easy handling and loading of chemicals without direct exposure to the user, as the packaging dissolves completely during the mixing process, ensuring that all the product is used and reducing waste. Other options, such as manual or liquid systems, do not encapsulate the criteria necessary for closed systems, which are primarily focused on minimizing exposure and maximizing safety during the handling of pesticides. In contrast, open systems allow for more exposure risks and are not designed to effectively contain and control the substance being mixed, which is why they are not classified under closed mixing and loading systems.