Washington Pesticide Laws and Safety Test, Practice
Exam 2026-2027 200 QUESTIONS AND 100%
VERIFIED SOLUTIONS, ELABORATED &
DETAILED CORRECT ANSWERS
"This product is highly toxic to bees" is an example of which type of precautionary statement?
A. Acute toxicity hazard.
B. Environmental hazard.
C. Physical or chemical hazard.
D. Agricultural use requirement. - CORRECT ANSWER: B
A dealer-manager must be present in a store or outlet when a commercial pesticide is sold or
distributed (T/F) - CORRECT ANSWER: True
A key to minimizing the hazard of pesticide use to the applicator is to avoid exposure (T/F) -
CORRECT ANSWER: True
Adjuvant - CORRECT ANSWER: A chemical added to a pesticide to performance and safety
All formations with the same active ingredient carry the same signal word (T/F) - CORRECT
ANSWER: False
All formulations of the same active ingredient carry the same signal word (T/F) - CORRECT
ANSWER: False
All pesticide products containing the same active ingredient are classified the same regardless of
the formulation (T/F) - CORRECT ANSWER: False
,An active ingredient may have one technical name or common name but may be in products with
several different trade/brand names (T/F) - CORRECT ANSWER: True
Application records must be kept of file for _____ years. - CORRECT ANSWER: Seven
Applicators who regularly use organophosphate and carbonate insecticides are advised to have a
pre-season blood test to establish their baseline level of _____. - CORRECT ANSWER:
cholinesterase
Because of the protective nature of eye tissues, very little pesticide that contacts the eyes is
actually absorbed (T/F) - CORRECT ANSWER: False
Best time to spray pesticides for moss, algae, lichen: - CORRECT ANSWER: Winter
Breeding or selecting plants and animals with characteristics for resistance to pests is an example
of which type of pest management method?
A. Biological control.
B. Mechanical control.
C. Genetic Control.
D. Physical/ environmental modificaiton. - CORRECT ANSWER: C
Can an apprentice licensed applicator but RUP? - CORRECT ANSWER: no
Can an apprentice licensed applicator supervise or train others? - CORRECT ANSWER: no
Commercial pesticide applicator - CORRECT ANSWER: Passing score on laws and safety exam
& category exams, licensing fee
DDT was banned because of its: - CORRECT ANSWER: stability and persistence
,Dealers must keep records for 7 years on the sale of general use agricultural pesticides (T/F) -
CORRECT ANSWER: True
Define the difference between Absorption vs Adsorption - CORRECT ANSWER: Absorbed vs
Adhered
Directly supervised Commercial Pesticide Trainee - CORRECT ANSWER: Passing score on
trainee test, licensing fee, and can be renewed only once
Does the supervisor need to be onesite when an apprentice applies? - CORRECT ANSWER: no
DOT - CORRECT ANSWER: Regulates Transportation Issues
Drift problems can be reduced by:
a. using lower pressure, smaller nozzle orifices
b. applying in very calm, stable air conditions
c. spraying upwind of a sensitive area
d. placing bloom as close to target as possible - CORRECT ANSWER: d. placing a boom as
close to the target as possible
Emulsifiable Concentrate - CORRECT ANSWER: Liquid formulations with the active
ingredient dissolved in one or more petroleum solvents
EPA - CORRECT ANSWER: Regulates federal pesticide and environmental issues
EPA and WSDA are the only agencies that regulate pesticides (T/F) - CORRECT ANSWER:
False
, EPA and WSDA are the only federal and state agencies that regulate pesticides (T/F) -
CORRECT ANSWER: False
ESA Endangered Species Act 1976 - CORRECT ANSWER: Protects threatened and endangered
species
Every pesticide in WA must be first registered with the WSDA (T/F) - CORRECT ANSWER:
True
Explain the difference between acute and chronic toxicity - CORRECT ANSWER: Acute:
minute to days
Chronic: low dose over long periods of time
Explain the difference between exposure and dose. - CORRECT ANSWER: Exposure: body
contact
dose: absorbed by body
FFDC Federal Food Drug and Cosmetic Act - CORRECT ANSWER: Sets tolerance for residue
left on food and crop after harvest
FIFRA - CORRECT ANSWER: Grants the EPA the authority to regulate pesticides
Fish kills most commonly result from a pollution of the water by _____. - CORRECT
ANSWER: Insecticides
For which pesticides can 2-PAM be used as an antidote? - CORRECT ANSWER:
organophosphates
From your calibration test, you determine that your backpack sprayer delivers 0.25 gallon of
water to cover a 250-square-foot test area. The label recommends applying pesticide at a rate of 6
Exam 2026-2027 200 QUESTIONS AND 100%
VERIFIED SOLUTIONS, ELABORATED &
DETAILED CORRECT ANSWERS
"This product is highly toxic to bees" is an example of which type of precautionary statement?
A. Acute toxicity hazard.
B. Environmental hazard.
C. Physical or chemical hazard.
D. Agricultural use requirement. - CORRECT ANSWER: B
A dealer-manager must be present in a store or outlet when a commercial pesticide is sold or
distributed (T/F) - CORRECT ANSWER: True
A key to minimizing the hazard of pesticide use to the applicator is to avoid exposure (T/F) -
CORRECT ANSWER: True
Adjuvant - CORRECT ANSWER: A chemical added to a pesticide to performance and safety
All formations with the same active ingredient carry the same signal word (T/F) - CORRECT
ANSWER: False
All formulations of the same active ingredient carry the same signal word (T/F) - CORRECT
ANSWER: False
All pesticide products containing the same active ingredient are classified the same regardless of
the formulation (T/F) - CORRECT ANSWER: False
,An active ingredient may have one technical name or common name but may be in products with
several different trade/brand names (T/F) - CORRECT ANSWER: True
Application records must be kept of file for _____ years. - CORRECT ANSWER: Seven
Applicators who regularly use organophosphate and carbonate insecticides are advised to have a
pre-season blood test to establish their baseline level of _____. - CORRECT ANSWER:
cholinesterase
Because of the protective nature of eye tissues, very little pesticide that contacts the eyes is
actually absorbed (T/F) - CORRECT ANSWER: False
Best time to spray pesticides for moss, algae, lichen: - CORRECT ANSWER: Winter
Breeding or selecting plants and animals with characteristics for resistance to pests is an example
of which type of pest management method?
A. Biological control.
B. Mechanical control.
C. Genetic Control.
D. Physical/ environmental modificaiton. - CORRECT ANSWER: C
Can an apprentice licensed applicator but RUP? - CORRECT ANSWER: no
Can an apprentice licensed applicator supervise or train others? - CORRECT ANSWER: no
Commercial pesticide applicator - CORRECT ANSWER: Passing score on laws and safety exam
& category exams, licensing fee
DDT was banned because of its: - CORRECT ANSWER: stability and persistence
,Dealers must keep records for 7 years on the sale of general use agricultural pesticides (T/F) -
CORRECT ANSWER: True
Define the difference between Absorption vs Adsorption - CORRECT ANSWER: Absorbed vs
Adhered
Directly supervised Commercial Pesticide Trainee - CORRECT ANSWER: Passing score on
trainee test, licensing fee, and can be renewed only once
Does the supervisor need to be onesite when an apprentice applies? - CORRECT ANSWER: no
DOT - CORRECT ANSWER: Regulates Transportation Issues
Drift problems can be reduced by:
a. using lower pressure, smaller nozzle orifices
b. applying in very calm, stable air conditions
c. spraying upwind of a sensitive area
d. placing bloom as close to target as possible - CORRECT ANSWER: d. placing a boom as
close to the target as possible
Emulsifiable Concentrate - CORRECT ANSWER: Liquid formulations with the active
ingredient dissolved in one or more petroleum solvents
EPA - CORRECT ANSWER: Regulates federal pesticide and environmental issues
EPA and WSDA are the only agencies that regulate pesticides (T/F) - CORRECT ANSWER:
False
, EPA and WSDA are the only federal and state agencies that regulate pesticides (T/F) -
CORRECT ANSWER: False
ESA Endangered Species Act 1976 - CORRECT ANSWER: Protects threatened and endangered
species
Every pesticide in WA must be first registered with the WSDA (T/F) - CORRECT ANSWER:
True
Explain the difference between acute and chronic toxicity - CORRECT ANSWER: Acute:
minute to days
Chronic: low dose over long periods of time
Explain the difference between exposure and dose. - CORRECT ANSWER: Exposure: body
contact
dose: absorbed by body
FFDC Federal Food Drug and Cosmetic Act - CORRECT ANSWER: Sets tolerance for residue
left on food and crop after harvest
FIFRA - CORRECT ANSWER: Grants the EPA the authority to regulate pesticides
Fish kills most commonly result from a pollution of the water by _____. - CORRECT
ANSWER: Insecticides
For which pesticides can 2-PAM be used as an antidote? - CORRECT ANSWER:
organophosphates
From your calibration test, you determine that your backpack sprayer delivers 0.25 gallon of
water to cover a 250-square-foot test area. The label recommends applying pesticide at a rate of 6
