Category 8 Pesticide License Practice Test

The device that uses centrifugal force for the dispersal of granules is the cyclone-type spreader. This type of spreader operates by spinning the granules rapidly, which creates a centrifugal force that propels the material outward through a series of fins or vanes. The design allows for an even and efficient distribution of granules across the targeted area, making it ideal for applications such as lawn care and agriculture where precise coverage is essential.

In contrast, the other devices listed do not rely on centrifugal force for dispersal. A compressed air sprayer uses air pressure to atomize liquids for spraying. The hand plunger duster dispenses powder through manual pressure applied to a plunger. A mist blower creates a fine mist of liquid pesticide or nutrient solutions using a fan or mechanical force but does not disperse granules the way a cyclone-type spreader does. Thus, the cyclone-type spreader is specifically designed for granular dispersal utilizing the principle of centrifugal force.