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ILLINOIS PESTICIDE APPLICATOR EXAM RIGHTS-OFWAY LATEST 2026/2027 STUDY QUESTIONS WITH VERIFIED ANSWERS (GUARANTEED PASS) | RATED A+
1. Define compressed-air sprayers - Answer>>> Pump compresses air, allowing it to be sprayed;
single stream of spray with large droplets; hand-held or shoulder strap
2. Define backpack sprayers - Answer>>> Hand-operated piston or diaphragm pump; holds more
gallons and is better for long-term work
3. What are the two types of nozzles for manual sprayers? - Answer>>> Adjustable (hallow
cone, straight stream) and flat fan or flooding
4. Define effective sprayed width - Answer>>> The distance between spray passes
5. Pressure ____________ (increases/decreases) as material is sprayed - Answer>>> Decreases
6. How do you maintain pressure as material is sprayed? - Answer>>> Re-pressurize frequently,
use a pressure gauge, and use a pressure-regulating valve
7. Define pesticide injection equipment - Answer>>> Pesticide injected directly into plant's
vascular system; requires active transpiring
8. What is an advantage of injection equiptment? - Answer>>> No drift
9. Define boom sprayers - Answer>>> Best choice for making broadcast applications; good
uniformity; best suited to flat, smooth terrain
10. Define boomless sprayers - Answer>>> Also used for broadcast applications; less uniformity
than boom sprayers; use off-center nozzles or spray heads
11. Define hose and reel sprayers - Answer>>> For spot, base, and leaf applications; amount of
spray required depends on size, shape, and leaf density; also good for chemical trimming; much
less uniform
12. What two things does droplet size impact? - Answer>>> Coverage and drift potential
13. Spray droplets smaller than ______ microns are at high risk of drifting - Answer>>> 150
14. What are the three ways that droplet sizes can be expressed? - Answer>>> Volume Median
Diameter, percentage of spray volume in droplets smaller than 150 micros, and droplet spectrum
classification by categories (ASABE standard)
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