Free Pesticide Core Exam Practice Questions

Sample Practice Questions

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

1. 1A grower sees unfamiliar leaf injury before choosing a control. What should the grower do first?

   1. A. Identify the pest or other cause of the injury
   2. B. Set a harvest interval for the crop
   3. C. Choose an application nozzle
   4. D. Calculate the tank-mix volume

   Answer: A

   Explanation: The Core Manual states, "The first step in pest management is to accurately identify the pest." Identification also helps distinguish pest damage from weather, pollutants, salt, or fertility problems.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 1, Pest Recognition, p. 4

2. 2What does the signal word on a pesticide label primarily communicate?

   1. A. Relative acute toxicity to humans and animals
   2. B. Length of residual pest control
   3. C. Required application volume
   4. D. Environmental persistence class

   Answer: A

   Explanation: The Core Manual states that the signal word indicates the "relative acute toxicity of the product to humans and animals."

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 3, Signal Words and Symbols, pp. 37-38

3. 3Pesticide splashes into an applicator's eye. Which route of exposure is involved?

   1. A. Dermal
   2. B. Ocular
   3. C. Inhalation
   4. D. Oral

   Answer: B

   Explanation: The Core Manual identifies four exposure routes: "skin (dermal), eyes (ocular), lungs (inhalation), and mouth (oral)."

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 5, Exposure—How Pesticides Enter the Body, p. 72

4. 4A pesticide label specifies gloves, coveralls, and protective eyewear for mixing. What is the applicator's minimum PPE for that task?

   1. A. All PPE specified by the label
   2. B. Only the gloves
   3. C. Only the coveralls
   4. D. Only the protective eyewear

   Answer: A

   Explanation: The Core Manual describes label-listed protection as the "minimum PPE"; therefore all listed items are required for the mixing task.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 6, Protect Yourself from Pesticides, p. 85

5. 5Where should pesticide containers be carried in a pickup used to transport an applicator to a field?

   1. A. The secured cargo bed
   2. B. The rear passenger footwell
   3. C. The enclosed passenger cab
   4. D. The front passenger seat

   Answer: A

   Explanation: The Core Manual directs transport in a "cargo area" separated from passengers, food, and feed, with containers secured against movement.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 8, Transportation — Transport Vehicle, pp. 123-125

6. 6A jar test develops flakes and sludge after the proposed tank-mix ingredients stand together. What does that result indicate?

   1. A. Physical incompatibility
   2. B. Correct emulsification
   3. C. Adequate agitation
   4. D. Improved synergism

   Answer: A

   Explanation: The Core Manual identifies "flakes, sludge, gel, precipitates, or other solids" after a jar test as evidence that the products are incompatible.

   Reference: National Pesticide Applicator Certification Core Manual — Chapter 10, Conducting a Compatibility Test, p. 145

7. 7During an outdoor WPS-covered application, what happens to the application exclusion zone as equipment moves?

   1. A. It moves with the application equipment
   2. B. It stays fixed at the mixing site
   3. C. It begins only after application ends
   4. D. It exists only inside storage buildings

   Answer: A

   Explanation: EPA states, "The AEZ only exists during the application, moves with the equipment during application, and can extend outside of an agricultural establishment."

   Reference: Agricultural Worker Protection Standard (WPS) | US EPA — Application Exclusion Zone

8. 8A Rhode Island private applicator will personally apply a state-limited-use pesticide and will not work under another certified applicator's supervision. What credential is required?

   1. A. A valid private applicator certificate
   2. B. A pesticide dealer license
   3. C. A commercial applicator license
   4. D. A product registration certificate

   Answer: A

   Explanation: 250-RICR-40-15-2 § 2.11(A) says each private applicator applying a restricted-use or state-limited-use pesticide "shall possess a valid private applicator certificate issued by the Director," unless applying under appropriate certified supervision.

   Reference: Rules and Regulations Relating to Pesticides (250-RICR-40-15-2) - Rhode Island Department of State — § 2.11(A)

9. 9A Rhode Island applicator draws mixing water from a potable supply. What equipment safeguard is required?

   1. A. An effective anti-siphon device approved by the Director
   2. B. A larger pesticide tank
   3. C. A higher-pressure nozzle
   4. D. A metal transfer bucket

   Answer: A

   Explanation: Section 2.19(A) requires equipment drawing from surface water or potable supplies to have "an effective anti-siphon device approved by the Director to prevent back flow."

   Reference: Rules and Regulations Relating to Pesticides (250-RICR-40-15-2) - Rhode Island Department of State — § 2.19(A)

10. 10For how long may the Rhode Island DEM Director suspend a pesticide certificate pending inquiry under R.I. Gen. Laws § 23-25-18(a)?

    1. A. No longer than 5 days
    2. B. No longer than 10 days
    3. C. No longer than 20 days
    4. D. No longer than 30 days

    Answer: B

    Explanation: The statute authorizes suspension pending inquiry "for not longer than ten (10) days" before further action after an opportunity for hearing.

    Reference: Title 23 Health and Safety — R.I. Gen. Laws § 23-25-18(a)