Free Core Examination Practice Questions

Sample Practice Questions

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

1. 1A pesticide product contains one ingredient intended to control the target pest and several ingredients that improve handling. Which ingredient is the active ingredient?

   1. A. The ingredient that improves pesticide performance
   2. B. The ingredient that controls the target pest
   3. C. The ingredient that carries the active ingredient
   4. D. The ingredient that keeps particles dispersed

   Answer: B

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, The active ingredient controls the pest. EPA explains that the active ingredient is the chemical that acts to control the pest; the other listed functions are formulation roles. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

2. 2Two products have similar toxicity, but one task creates much greater worker exposure. Which task presents the greater pesticide risk?

   1. A. The open-transfer task with greater worker contact potential
   2. B. The closed-transfer task with lower contact potential
   3. C. The task performed farther from a sensitive water source
   4. D. The task using the product with the shorter restricted-entry interval

   Answer: A

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, The active ingredient controls the pest. EPA describes pesticide risk as a function of toxicity and exposure; with toxicity held similar, greater exposure means greater risk. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

3. 3A government program imposes a quarantine to prevent an invasive pest from spreading into a new production area. Which pest-management method is being used?

   1. A. Genetic control
   2. B. Mechanical control
   3. C. Regulatory control
   4. D. Biological control

   Answer: C

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, Pest species have different physical forms depending on the life cycle stage or the time of year. EPA lists quarantine and other government actions that prevent pest movement as regulatory control. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

4. 4A farmer applies restricted-use pesticides to produce crops on land rented by the farmer's employer. Under federal certification terminology, what type of applicator is this?

   1. A. Dealer applicator
   2. B. Public-health applicator
   3. C. Private applicator
   4. D. Commercial applicator

   Answer: C

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, The active ingredient controls the pest. EPA classifies a person applying pesticides to produce an agricultural commodity on land owned or rented by the person or employer as a private applicator. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

5. 5A spill reaches a stream. Why must water and pesticide authorities be notified without delay?

   1. A. To warn downstream water users and protect affected uses
   2. B. To decide whether the pesticide should be federally registered
   3. C. To determine whether the applicator’s equipment needs recalibration
   4. D. To revise the crop’s economic action threshold

   Answer: A

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, Keep the air gap at least twice the diameter of the discharge pipe. EPA says prompt notification lets authorities warn downstream water users and protect livestock, recreation, and irrigated crops. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

6. 6Which factors should guide selection of a pesticide application method?

   1. A. Target, site, pesticide properties, equipment, cost, and efficiency
   2. B. Target, site, signal word, establishment number, cost, and efficiency
   3. C. Target, site, container size, product age, cost, and efficiency
   4. D. Target, site, certification term, storage design, cost, and efficiency

   Answer: A

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, The vast array of application equipment must be matched to the pesticide as well as to the size and type of the job. EPA says method selection depends on the pest, site, pesticide properties, equipment suitability, cost, and efficiency. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

7. 7A label calls for 2 pounds of formulation per 100 gallons of water. How much formulation is needed for a 300-gallon tank?

   1. A. 8 pounds
   2. B. 6 pounds
   3. C. 3 pounds
   4. D. 4 pounds

   Answer: B

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, Unless you have the right amount of pesticide in your tank mix, even a correctly calibrated sprayer can apply the wrong rate. Using gallons in tank × pounds per 100 gallons ÷ 100 gives 300 × 2 ÷ 100 = 6 pounds. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

8. 8Before using a pesticide product for the first time, what is the applicator's primary source for legally binding use directions?

   1. A. The product Safety Data Sheet
   2. B. The pesticide use-and-application record
   3. C. The EPA-approved product labeling
   4. D. The applicator training manual

   Answer: C

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, The active ingredient controls the pest. EPA identifies pesticide labeling as the enforceable source of directions and restrictions governing use. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — Introduction; label and labeling definitions

9. 9An unfamiliar insect is collected from a damaged crop. Which information is most useful along with its physical features for accurate identification?

   1. A. Its host, collection site, season, and life stage
   2. B. Its injury pattern, economic threshold, treatment cost, and label rate
   3. C. Its pesticide susceptibility, mode of action, formulation, and residue tolerance
   4. D. Its regulatory status, quarantine boundary, control method, and calibration rate

   Answer: A

   Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, Pest species have different physical forms depending on the life cycle stage or the time of year. EPA's core manual identifies host, location, environmental conditions, season, and life-cycle stage as important pest-identification clues. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

   Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement

10. 10During mixing, concentrate splashes onto an applicator's forearm. Which route of exposure occurred?

    1. A. Ocular exposure from a splash to the eye
    2. B. Dermal exposure through the skin
    3. C. Inhalation exposure from breathing vapor
    4. D. Oral exposure from swallowing residue

    Answer: B

    Explanation: EPA’s readable labeling page states, “It is a violation of Federal law to use this product in a manner inconsistent with its labeling.” The official core manual states, Hazard, or risk, is the true concern for the applicator or handler. EPA identifies pesticide contact with skin as dermal exposure. The quoted rule applies the cited technical fact through the product’s enforceable directions and restrictions.

    Reference: Introduction to Pesticide Labels | US EPA — opening paragraph; legally enforceable label statement