OREGON PESTICIDE LAWS AND SAFETY EXAM
2026/2027 | QUESTIONS AND ANSWERS |
VERIFIED SOLUTIONS | COMPLETE STUDY GUIDE
• This study guide contains 200 verified multiple-choice questions with bolded
correct answers and EXPERT RATIONALE, covering every topic tested on the
Oregon Pesticide Laws and Safety Exam 2026/2027.
• Study by reading each question carefully, choosing your answer, then confirming
with the bolded correct answer and EXPERT RATIONALE beneath it to reinforce
your understanding before exam day.
1. Who is responsible for regulating pesticide use in Oregon?
A. The U.S. Environmental Protection Agency (EPA)
B. The Oregon Department of Agriculture (ODA)
C. The Oregon Health Authority
D. The U.S. Fish and Wildlife Service
E. The Oregon Department of Environmental Quality
Correct Answer: B. The Oregon Department of Agriculture (ODA)
EXPERT RATIONALE: The ODA administers Oregon's pesticide laws under ORS
Chapter 634 and is the primary state agency for pesticide regulation, licensing, and
enforcement.
2. Which federal law primarily governs pesticide registration and use in the
United States?
A. The Clean Water Act
B. The Endangered Species Act
C. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
D. The Resource Conservation and Recovery Act (RCRA)
E. The Food Quality Protection Act
,Correct Answer: C. The Federal Insecticide, Fungicide, and Rodenticide Act
(FIFRA)
EXPERT RATIONALE: FIFRA is the primary federal law governing the registration,
distribution, sale, and use of pesticides in the United States, administered by the
EPA.
3. What signal word on a pesticide label indicates the HIGHEST level of
toxicity?
A. CAUTION
B. WARNING
C. DANGER
D. POISON
E. HAZARD
Correct Answer: C. DANGER
EXPERT RATIONALE: DANGER (often accompanied by POISON and a skull and
crossbones) indicates the highest toxicity category (Category I). CAUTION indicates
the lowest toxicity among the three required signal words.
4. Which signal word indicates a pesticide with moderate toxicity?
A. CAUTION
B. DANGER
C. WARNING
D. NOTICE
E. HAZARD
Correct Answer: C. WARNING
,EXPERT RATIONALE: WARNING indicates Toxicity Category II (moderately toxic).
DANGER equals Category I (highly toxic) and CAUTION equals Category III or IV
(slightly toxic or relatively non-toxic).
5. Which of the following is considered a Restricted Use Pesticide (RUP)?
A. A pesticide that can be purchased by anyone at a garden store
B. A pesticide that may cause unreasonable adverse effects on humans or the
environment
C. A pesticide that has expired
D. A pesticide sold only in small quantities
E. A pesticide with the signal word CAUTION
Correct Answer: B. A pesticide that may cause unreasonable adverse effects
on humans or the environment
EXPERT RATIONALE: RUPs are classified by the EPA because of their potential to
cause unreasonable adverse effects and may only be purchased and used by
certified applicators or persons under their direct supervision.
6. Who may legally purchase a Restricted Use Pesticide in Oregon?
A. Any adult over 18 years of age
B. Any licensed contractor
C. A certified pesticide applicator or a person under their direct supervision
D. Any farmer with more than 10 acres
E. Any person with a valid Oregon driver's license
Correct Answer: C. A certified pesticide applicator or a person under their
direct supervision
, EXPERT RATIONALE: Oregon law requires that RUPs be purchased only by certified
applicators or those under their direct supervision, consistent with federal FIFRA
requirements.
7. In Oregon, pesticide applicator licenses are issued by which agency?
A. Oregon Department of Environmental Quality
B. Oregon Department of Consumer and Business Services
C. Oregon Department of Agriculture
D. Oregon State University Extension Service
E. U.S. Environmental Protection Agency
Correct Answer: C. Oregon Department of Agriculture
EXPERT RATIONALE: The ODA issues pesticide applicator licenses in Oregon under
ORS Chapter 634.
8. How often must a commercial pesticide applicator license be renewed in
Oregon?
A. Every year
B. Every two years
C. Every three years
D. Every five years
E. Every six months
Correct Answer: C. Every three years
EXPERT RATIONALE: In Oregon, commercial pesticide applicator licenses must be
renewed every three years, and applicators must meet continuing education
requirements for renewal.
2026/2027 | QUESTIONS AND ANSWERS |
VERIFIED SOLUTIONS | COMPLETE STUDY GUIDE
• This study guide contains 200 verified multiple-choice questions with bolded
correct answers and EXPERT RATIONALE, covering every topic tested on the
Oregon Pesticide Laws and Safety Exam 2026/2027.
• Study by reading each question carefully, choosing your answer, then confirming
with the bolded correct answer and EXPERT RATIONALE beneath it to reinforce
your understanding before exam day.
1. Who is responsible for regulating pesticide use in Oregon?
A. The U.S. Environmental Protection Agency (EPA)
B. The Oregon Department of Agriculture (ODA)
C. The Oregon Health Authority
D. The U.S. Fish and Wildlife Service
E. The Oregon Department of Environmental Quality
Correct Answer: B. The Oregon Department of Agriculture (ODA)
EXPERT RATIONALE: The ODA administers Oregon's pesticide laws under ORS
Chapter 634 and is the primary state agency for pesticide regulation, licensing, and
enforcement.
2. Which federal law primarily governs pesticide registration and use in the
United States?
A. The Clean Water Act
B. The Endangered Species Act
C. The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
D. The Resource Conservation and Recovery Act (RCRA)
E. The Food Quality Protection Act
,Correct Answer: C. The Federal Insecticide, Fungicide, and Rodenticide Act
(FIFRA)
EXPERT RATIONALE: FIFRA is the primary federal law governing the registration,
distribution, sale, and use of pesticides in the United States, administered by the
EPA.
3. What signal word on a pesticide label indicates the HIGHEST level of
toxicity?
A. CAUTION
B. WARNING
C. DANGER
D. POISON
E. HAZARD
Correct Answer: C. DANGER
EXPERT RATIONALE: DANGER (often accompanied by POISON and a skull and
crossbones) indicates the highest toxicity category (Category I). CAUTION indicates
the lowest toxicity among the three required signal words.
4. Which signal word indicates a pesticide with moderate toxicity?
A. CAUTION
B. DANGER
C. WARNING
D. NOTICE
E. HAZARD
Correct Answer: C. WARNING
,EXPERT RATIONALE: WARNING indicates Toxicity Category II (moderately toxic).
DANGER equals Category I (highly toxic) and CAUTION equals Category III or IV
(slightly toxic or relatively non-toxic).
5. Which of the following is considered a Restricted Use Pesticide (RUP)?
A. A pesticide that can be purchased by anyone at a garden store
B. A pesticide that may cause unreasonable adverse effects on humans or the
environment
C. A pesticide that has expired
D. A pesticide sold only in small quantities
E. A pesticide with the signal word CAUTION
Correct Answer: B. A pesticide that may cause unreasonable adverse effects
on humans or the environment
EXPERT RATIONALE: RUPs are classified by the EPA because of their potential to
cause unreasonable adverse effects and may only be purchased and used by
certified applicators or persons under their direct supervision.
6. Who may legally purchase a Restricted Use Pesticide in Oregon?
A. Any adult over 18 years of age
B. Any licensed contractor
C. A certified pesticide applicator or a person under their direct supervision
D. Any farmer with more than 10 acres
E. Any person with a valid Oregon driver's license
Correct Answer: C. A certified pesticide applicator or a person under their
direct supervision
, EXPERT RATIONALE: Oregon law requires that RUPs be purchased only by certified
applicators or those under their direct supervision, consistent with federal FIFRA
requirements.
7. In Oregon, pesticide applicator licenses are issued by which agency?
A. Oregon Department of Environmental Quality
B. Oregon Department of Consumer and Business Services
C. Oregon Department of Agriculture
D. Oregon State University Extension Service
E. U.S. Environmental Protection Agency
Correct Answer: C. Oregon Department of Agriculture
EXPERT RATIONALE: The ODA issues pesticide applicator licenses in Oregon under
ORS Chapter 634.
8. How often must a commercial pesticide applicator license be renewed in
Oregon?
A. Every year
B. Every two years
C. Every three years
D. Every five years
E. Every six months
Correct Answer: C. Every three years
EXPERT RATIONALE: In Oregon, commercial pesticide applicator licenses must be
renewed every three years, and applicators must meet continuing education
requirements for renewal.
