Free Private Applicator Exam Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Private Applicator Exam practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1An applicator wants to use a pesticide on a crop that is not listed anywhere on the product labeling. What should the applicator do?

   1. A. Apply at the lowest listed rate
   2. B. Do not make that application
   3. C. Apply only after sunset
   4. D. Use half the normal carrier volume

   Answer: B

   Explanation: The controlling label section is “Directions for Use.” Because the crop is absent from its authorized sites, changing rate, timing, or carrier does not authorize the application.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 3, Directions for Use, pp. 43-45

2. 2What are the four primary routes by which pesticides enter the body?

   1. A. Dermal, ocular, inhalation, and oral
   2. B. Acute, chronic, local, and systemic
   3. C. Mixing, loading, spraying, and cleanup
   4. D. Heat, pressure, vapor, and residue

   Answer: A

   Explanation: The manual explicitly names “skin (dermal), eyes (ocular), lungs (inhalation), and mouth (oral).” Those four routes make A uniquely correct.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 5, Routes of Exposure, pp. 72-74

3. 3Which statement correctly defines pesticide spray drift during an application?

   1. A. Movement through soil after rainfall
   2. B. Breakdown of pesticide on a treated surface
   3. C. Airborne movement of spray droplets away from the target during application
   4. D. Transfer of residue from equipment during cleaning

   Answer: C

   Explanation: EPA defines spray drift as “the movement of pesticide dust or droplets through the air at the time of application or soon after, to any site other than the area intended.” Option C matches that movement.

   Reference: Epa Pesticide Drift — Definition of pesticide drift

4. 4Why should an applicator positively identify a pest before choosing a pesticide?

   1. A. Different pests may require different control tactics and timing
   2. B. Identification determines the product's EPA registration number
   3. C. Every pest requires a restricted-use product
   4. D. Identification eliminates the need to monitor treatment results

   Answer: A

   Explanation: The manual states, “The first step in pest management is to accurately identify the pest.” Identification reveals life cycle, susceptible stages, and known control methods, supporting A.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 1, Pest Identification, pp. 3-6

5. 5What is an active ingredient in a pesticide product?

   1. A. A carrier used only to dilute the formulation
   2. B. A substance that prevents container corrosion
   3. C. The ingredient intended to prevent, destroy, repel, or mitigate the pest
   4. D. Any ingredient omitted from the label

   Answer: C

   Explanation: EPA says an active ingredient “prevents, destroys, repels, or mitigates a pest.” Carrier and formulation-aid functions do not make an ingredient active.

   Reference: Basic Information about Pesticide Ingredients | US EPA — Active and inert ingredients

6. 6Which sprayer adjustment generally produces larger droplets and lowers drift potential?

   1. A. Increase pressure through a smaller orifice
   2. B. Increase boom height
   3. C. Decrease carrier volume at the same nozzle
   4. D. Use a larger nozzle orifice at lower pressure

   Answer: D

   Explanation: The manual states, “large nozzle orifices and low pressures produce larger droplets.” Because larger droplets are less drift-prone, D is the matching adjustment.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 7, Droplet Size and Drift, pp. 107-109

7. 7Which activity fits Oklahoma's definition of a private applicator?

   1. A. Applying restricted-use pesticide for compensation on another person's property
   2. B. Using restricted-use pesticide as a noncommercial government employee
   3. C. Using restricted pesticide to produce an agricultural commodity on property owned or rented by the applicator or employer
   4. D. Selling restricted-use pesticide under a dealer permit

   Answer: C

   Explanation: Oklahoma defines a private applicator as one who uses or supervises restricted pesticide “for purposes of producing any agricultural commodity on property owned or rented by the person, or employer.” Option C matches that scope.

   Reference: SECTION 1 — 2 O.S. Section 3-81, definition 35; OAC 35:30-17-1(25)

8. 8A private applicator supervises a noncertified person using a restricted-use pesticide. What certification must the supervisor hold?

   1. A. Current certification in any pesticide category
   2. B. Expired certification in the applicable category
   3. C. Current certification only in the general standards category
   4. D. Current certification in each category applicable to the supervised use

   Answer: D

   Explanation: 40 CFR 171.201 requires the supervisor to “be certified in each category ... applicable to the supervised pesticide use.” Only D provides current, use-matched certification.

   Reference: eCFR :: 40 CFR 171.201 -- Requirements for direct supervision of noncertified applicators by certified applicators. — 40 CFR 171.201(b)(1)(ii)

9. 9What is the safest general container practice for long-term storage of pesticide concentrate?

   1. A. Use a relabeled food jar with a tight lid
   2. B. Keep it in the original labeled container
   3. C. Use a relabeled soft-drink bottle with a child-resistant cap
   4. D. Use an unlabeled service container reserved for pesticides

   Answer: B

   Explanation: EPA directs, “Always store pesticides in their original containers with the label.” Relabeling a food, drink, or service container does not satisfy that long-term storage rule.

   Reference: Storing Pesticides Safely | US EPA — Keep pesticides in original containers

10. 10Which list contains only agricultural establishments generally covered by the WPS when pesticides are used in plant production?

    1. A. Farms, forests, nurseries, and greenhouses
    2. B. Farms, forests, grocery warehouses, and greenhouses
    3. C. Farms, hotels, nurseries, and greenhouses
    4. D. Schools, forests, nurseries, and greenhouses

    Answer: A

    Explanation: EPA describes covered production locations as “farms, forests, nurseries, and greenhouses.” Only A stays entirely within that agricultural-establishment list.

    Reference: National Pesticide Applicator Certification Core Manual — Agricultural establishments covered by WPS