NORTH DAKOTA COMMERCIAL PESTICIDE APPLICATORS EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE
2026/2027
Section One: Questions 1–100
Under the North Dakota Pesticide Act, how long must commercial pesticide applicators maintain
accurate records of all restricted-use pesticide applications?
A. 1 year
B. 2 years
C. 3 years
D. 5 years
🟢 C. 3 years
🔴 RATIONALE: North Dakota state law mandates that commercial pesticide applicators keep
comprehensive records of both general and restricted-use pesticide applications for a minimum
period of 3 years from the date of application.
Which state agency is primarily responsible for regulating pesticide registration, licensing, and
enforcement in North Dakota?
A. North Dakota Department of Environmental Quality
B. North Dakota Department of Agriculture
C. North Dakota Game and Fish Department
D. North Dakota State University Extension Service
🟢 B. North Dakota Department of Agriculture
🔴 RATIONALE: The North Dakota Department of Agriculture (NDDA) serves as the lead state
regulatory agency tasked with administering the state's pesticide laws, certification programs, and
enforcement actions.
,If an applicator exposes a non-target area due to severe wind drift during an application, which
legal concept applies under state enforcement guidelines?
A. Strict liability with no penalty if accidental
B. Negligent use of a pesticide inconsistent with its labeling
C. Exempt status if weather conditions changed suddenly
D. Adherence to regional custom defense
🟢 B. Negligent use of a pesticide inconsistent with its labeling
🔴 RATIONALE: Operating a sprayer during weather conditions that cause severe drift constitutes
a violation of the pesticide label instructions, which explicitly prohibit applications that allow drift to
non-target properties.
What is the minimum age requirement for an individual to become certified as a commercial
pesticide applicator in North Dakota?
A. 16 years old
B. 18 years old
C. 21 years old
D. There is no minimum age requirement
🟢 B. 18 years old
🔴 RATIONALE: State regulations stipulate that any individual seeking commercial pesticide
applicator certification must be at least 18 years of age to legally take the exams and hold a
license.
When applying pesticides to agricultural fields near the windbreaks commonly found in North
Dakota, which group of non-target organisms is at highest risk from drift of broad-spectrum
insecticides?
A. Deep-burrowing earthworms
B. Insectivorous birds and pollinators
,C. Soil-dwelling fungal pathogens
D. Sub-surface microscopic nematodes
🟢 B. Insectivorous birds and pollinators
🔴 RATIONALE: Windbreaks host diverse populations of beneficial insects, pollinators, and
nesting birds. Off-target drift of broad-spectrum insecticides directly impacts these species via
acute toxicity and food-source depletion.
What type of pesticide formulation consists of active ingredients dissolved in a liquid petroleum
solvent combined with an emulsifier?
A. Soluble Powder (SP)
B. Emulsifiable Concentrate (EC)
C. Flowable (F)
D. Water-Dispersible Granule (WDG)
🟢 B. Emulsifiable Concentrate (EC)
🔴 RATIONALE: Emulsifiable concentrates contain oil-soluble active ingredients dissolved in an
organic solvent with an emulsifying agent that allows the product to mix uniformly with water,
forming a milky emulsion.
Which atmospheric condition is characterized by a layer of warm air trapping cooler air near the
ground, significantly increasing the risk of long-distance pesticide vapor drift?
A. Convective instability
B. Thermal inversion
C. Low relative humidity
D. High wind velocity
🟢 B. Thermal inversion
🔴 RATIONALE: A thermal inversion occurs when air near the ground is cooler than the air above
, it. This stable air layer prevents vertical mixing, causing fine spray droplets or vapors to remain
suspended and travel long distances horizontally.
An applicator mixes two compatible pesticides together in a spray tank, but notices the mixture
forms a thick, gel-like precipitate that clogs the nozzles. This is an example of what type of
incompatibility?
A. Phytotoxic incompatibility
B. Placement incompatibility
C. Chemical incompatibility
D. Physical incompatibility
🔴 RATIONALE: Physical incompatibility occurs when products fail to mix properly in the tank,
resulting in separation, curdling, settling, or precipitate formation that disrupts mechanical
operation.
What is the primary purpose of adding a surfactant to a post-emergence herbicide spray mixture?
A. To decrease the volatility of the active ingredient
B. To reduce the surface tension of the spray droplets
C. To accelerate the photo-degradation of the chemical
D. To alter the pH of the water carrier
🟢 B. To reduce the surface tension of the spray droplets
🔴 RATIONALE: Surfactants are wetting agents that reduce the surface tension of water droplets,
allowing the spray to spread more evenly across leaf surfaces rather than bouncing or rolling off.
Which signal word on a pesticide label indicates that the product is considered highly toxic and can
cause severe systemic poisoning or fatal injuries if absorbed?
A. CAUTION
B. WARNING
C. DANGER-POISON
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE
2026/2027
Section One: Questions 1–100
Under the North Dakota Pesticide Act, how long must commercial pesticide applicators maintain
accurate records of all restricted-use pesticide applications?
A. 1 year
B. 2 years
C. 3 years
D. 5 years
🟢 C. 3 years
🔴 RATIONALE: North Dakota state law mandates that commercial pesticide applicators keep
comprehensive records of both general and restricted-use pesticide applications for a minimum
period of 3 years from the date of application.
Which state agency is primarily responsible for regulating pesticide registration, licensing, and
enforcement in North Dakota?
A. North Dakota Department of Environmental Quality
B. North Dakota Department of Agriculture
C. North Dakota Game and Fish Department
D. North Dakota State University Extension Service
🟢 B. North Dakota Department of Agriculture
🔴 RATIONALE: The North Dakota Department of Agriculture (NDDA) serves as the lead state
regulatory agency tasked with administering the state's pesticide laws, certification programs, and
enforcement actions.
,If an applicator exposes a non-target area due to severe wind drift during an application, which
legal concept applies under state enforcement guidelines?
A. Strict liability with no penalty if accidental
B. Negligent use of a pesticide inconsistent with its labeling
C. Exempt status if weather conditions changed suddenly
D. Adherence to regional custom defense
🟢 B. Negligent use of a pesticide inconsistent with its labeling
🔴 RATIONALE: Operating a sprayer during weather conditions that cause severe drift constitutes
a violation of the pesticide label instructions, which explicitly prohibit applications that allow drift to
non-target properties.
What is the minimum age requirement for an individual to become certified as a commercial
pesticide applicator in North Dakota?
A. 16 years old
B. 18 years old
C. 21 years old
D. There is no minimum age requirement
🟢 B. 18 years old
🔴 RATIONALE: State regulations stipulate that any individual seeking commercial pesticide
applicator certification must be at least 18 years of age to legally take the exams and hold a
license.
When applying pesticides to agricultural fields near the windbreaks commonly found in North
Dakota, which group of non-target organisms is at highest risk from drift of broad-spectrum
insecticides?
A. Deep-burrowing earthworms
B. Insectivorous birds and pollinators
,C. Soil-dwelling fungal pathogens
D. Sub-surface microscopic nematodes
🟢 B. Insectivorous birds and pollinators
🔴 RATIONALE: Windbreaks host diverse populations of beneficial insects, pollinators, and
nesting birds. Off-target drift of broad-spectrum insecticides directly impacts these species via
acute toxicity and food-source depletion.
What type of pesticide formulation consists of active ingredients dissolved in a liquid petroleum
solvent combined with an emulsifier?
A. Soluble Powder (SP)
B. Emulsifiable Concentrate (EC)
C. Flowable (F)
D. Water-Dispersible Granule (WDG)
🟢 B. Emulsifiable Concentrate (EC)
🔴 RATIONALE: Emulsifiable concentrates contain oil-soluble active ingredients dissolved in an
organic solvent with an emulsifying agent that allows the product to mix uniformly with water,
forming a milky emulsion.
Which atmospheric condition is characterized by a layer of warm air trapping cooler air near the
ground, significantly increasing the risk of long-distance pesticide vapor drift?
A. Convective instability
B. Thermal inversion
C. Low relative humidity
D. High wind velocity
🟢 B. Thermal inversion
🔴 RATIONALE: A thermal inversion occurs when air near the ground is cooler than the air above
, it. This stable air layer prevents vertical mixing, causing fine spray droplets or vapors to remain
suspended and travel long distances horizontally.
An applicator mixes two compatible pesticides together in a spray tank, but notices the mixture
forms a thick, gel-like precipitate that clogs the nozzles. This is an example of what type of
incompatibility?
A. Phytotoxic incompatibility
B. Placement incompatibility
C. Chemical incompatibility
D. Physical incompatibility
🔴 RATIONALE: Physical incompatibility occurs when products fail to mix properly in the tank,
resulting in separation, curdling, settling, or precipitate formation that disrupts mechanical
operation.
What is the primary purpose of adding a surfactant to a post-emergence herbicide spray mixture?
A. To decrease the volatility of the active ingredient
B. To reduce the surface tension of the spray droplets
C. To accelerate the photo-degradation of the chemical
D. To alter the pH of the water carrier
🟢 B. To reduce the surface tension of the spray droplets
🔴 RATIONALE: Surfactants are wetting agents that reduce the surface tension of water droplets,
allowing the spray to spread more evenly across leaf surfaces rather than bouncing or rolling off.
Which signal word on a pesticide label indicates that the product is considered highly toxic and can
cause severe systemic poisoning or fatal injuries if absorbed?
A. CAUTION
B. WARNING
C. DANGER-POISON
