10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The TX-PEST exam has 100 questions and runs 2 hours.
These 10 free TX-PEST questions are organized by exam domain, so you can see how each part of the Texas Commercial Pesticide Applicator General Exam blueprint is tested. Reveal the answer and explanation under each question.
A herbicide's container label allows 2 pints per acre and a 14-day retreatment interval. A current supplemental label specifically governing the proposed use allows no more than 1.5 pints per acre and requires 21 days between applications. The supplemental label does not state that it replaces the container directions. The applicator should:
Correct answer: C - Use no more than 1.5 pints per acre and wait at least 21 days
A formulated pesticide has an acute oral LD50 of 320 mg/kg, an acute dermal LD50 of 3,800 mg/kg, and an acute inhalation LC50 of 5 mg/L. No eye or skin endpoint is more severe. Which front-panel signal word applies based on the most toxic endpoint?
Correct answer: A - WARNING
A label permits 1.5 quarts per acre per application, no more than 4 quarts per acre per year, and a 7-day preharvest interval. A field has already received 1.25 and 1.50 quarts per acre this year. Harvest is planned 9 days after today's treatment. What is the greatest lawful rate for today's application?
Correct answer: D - 1.25 quarts per acre
Minutes after repairing a leaking insecticide hose, an applicator develops pinpoint pupils, heavy salivation, wheezing, abdominal cramping, and muscle twitching. The product is an organophosphate. What is the priority response?
Correct answer: B - Stop exposure, decontaminate promptly, and obtain emergency care
The label requires an organic-vapor cartridge respirator for an outdoor mixing task. The handler arrives wearing a properly fitted particulate-filtering facepiece. Oxygen is normal and the vapor concentration is known. What correction is necessary before mixing begins?
Correct answer: B - Use the label-specified vapor cartridge under the required respirator program
At a pesticide mixing and loading site, the label requires protective eyewear. The employer provides soap, towels, a clean change of clothing, and four 1-gallon containers of clean water suitable for eye flushing. No plumbed eyewash is present. What must be added to meet the Worker Protection Standard emergency-eyewash quantity?
Correct answer: D - At least 2 more gallons of suitable eye-flush water
A soluble, persistent herbicide adsorbs weakly to soil. The proposed field has coarse sand, little organic matter, shallow groundwater, and an irrigation plan that would apply more water than the root zone can hold. Which environmental pathway is the primary concern?
Correct answer: A - Leaching into groundwater
Before a dawn application, smoke from a nearby burn remains in a flat horizontal layer, wind at release height is nearly calm, and a sensitive vineyard lies downwind. The label prohibits application during a temperature inversion. The most defensible decision is to:
Correct answer: C - Delay until vertical air mixing resumes and conditions meet the label
Three days after a broadcast herbicide treatment, untreated green strips repeat at the same interval as the nozzle spacing. Weeds within adjacent swaths show the expected injury. What should the applicator investigate first?
Correct answer: D - Nozzle plugging, boom height, and pattern overlap
Weekly scouting finds a pest below the action threshold, no current economic damage, and abundant predators. Pheromone-trap captures increased from the previous week. What action best follows integrated pest management principles?
Correct answer: A - Continue scouting and reassess against the action threshold
The TX-PEST exam also covers these domains. Drill them in the full free practice test:
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