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These 10 free IN-PEST questions are organized by exam domain, so you can see how each part of the Indiana Commercial Pesticide Applicator Core Exam blueprint is tested. Reveal the answer and explanation under each question.
A pesticide label lists a 24-hour restricted-entry interval (REI) and a 7-day preharvest interval (PHI). A routine crop scout plans to enter 36 hours after application, while harvest is scheduled for day 5. Which plan applies both intervals correctly without adding a restriction the label does not require?
Correct answer: C - Allow routine scouting now; postpone harvest until at least day 7
Toxicology data for a pesticide show an oral LD50 of 900 mg/kg, a dermal LD50 of 6,000 mg/kg, an inhalation LC50 of 4 mg/L, mild skin irritation, and corrosive eye injury with corneal opacity not reversible within 7 days. The required front-panel treatment is:
Correct answer: D - DANGER, without an automatic POISON and skull-and-crossbones requirement
A container label states, "Before use in listed counties, obtain the EPA endangered-species bulletin for the month of application and follow its pesticide-use limitations." The county is listed, but the applicator has not retrieved the bulletin. Before treating the site, the applicator must:
Correct answer: B - Retrieve and follow the current referenced bulletin
During mixing, pesticide concentrate splashes into an applicator's eye while a contact lens is in place. The person is awake and breathing normally. Select the correct first-aid sequence.
Correct answer: C - Begin rinsing at once, remove the lens after 5 minutes, and continue rinsing for a total of 15-20 minutes
Shortly after a pesticide leak, a handler working in warm weather develops pinpoint pupils, marked salivation and tearing, abdominal cramps, muscle twitching, and chest tightness. Which interpretation should govern the response?
Correct answer: B - Suspected cholinesterase inhibition; stop exposure, decontaminate, call 911, and provide the product label
A label requires an organic-vapor cartridge respirator with a particulate prefilter. The wearer has current medical clearance and fit testing. The cartridge change schedule requires replacement after 8 hours of use; the eighth hour has ended, and no odor is detected. At that point, the wearer should:
Correct answer: D - Leave the exposure area and replace the cartridges on schedule
A secured two-gallon pesticide jug leaks in the open bed of a parked truck. There is no fire, injury, vapor cloud, or nearby drain, and the crew's spill kit is adequate for the release. After excluding bystanders and donning label- and SDS-specified PPE, what should the crew do next?
Correct answer: A - Stop the leak if safe, dike and absorb the liquid, then collect the waste in a compatible labeled container
Before sunrise, surface wind is 2 mph and falls within the label's stated wind range. Smoke from a nearby test source forms a flat layer and moves sideways instead of rising. Because the label prohibits application during temperature inversions, the applicator should:
Correct answer: B - Delay until vertical mixing returns and smoke rises and disperses
A pesticide deposit is estimated at 160 mg. Under unchanged conditions, its half-life is 6 days. A site plan requires additional containment only when more than 30 mg is predicted to remain after 18 days. Which site decision is supported by the calculation?
Correct answer: A - About 20 mg remains, so the stated containment trigger is not reached
An IPM plan sets an action threshold at 15 larvae per 100 plants and an economic injury level at 25. Scouting finds 18 young, exposed larvae per 100 plants. The selected control is labeled for the crop and this life stage. The next step under the plan is to:
Correct answer: D - Begin the selected control now to keep the population from reaching the economic injury level
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