2026 WASHINGTON PESTICIDE LAWS AND
SAFETY REVIEW EXAMS UPDATED QUESTIONS
AND ANSWERS SURE A+
✔✔What WA State agency is responsible for respirators? - ✔✔Dept. Labor and
Industries
✔✔Select the condition that could help reduce pesticide volatilization:
a. high air temps
b. low relative humidity
c. incorporation
d. small droplets
e. wet soils - ✔✔b. low relative humidity
✔✔Pesticide absorption is greatest in coarse, sandy soils (T/F) - ✔✔False
✔✔Runoff is more likely from a water-saturated soil than from an unsaturated soil. -
✔✔True
✔✔Pesticide degration processes can be beneficial because they reduce the amount of
pesticide residue in the environment (T/F) - ✔✔True
,✔✔The upper level of the water saturated zone in the soil is called the _____. -
✔✔Water table
✔✔Pesticide properties have little effect on whether a chemical will reach the
groundwater (T/F) - ✔✔False
✔✔Pesticides can reach groundwater through _____. - ✔✔Leaching
✔✔Fish kills most commonly result from a pollution of the water by _____. -
✔✔Insecticides
✔✔The most common way for pesticides to enter your body is through _____. -
✔✔Dermal absorption
✔✔When using an emulsifiable concentrate formulation, what do you need to
remember? - ✔✔This formulation may have a high phytotoxicity hazard
✔✔Which of the following is not registered as a pesticide under WA state law:
a. drift retardants
b. plant growth regulator
c. nematicides
d. nitrogen fertilizer - ✔✔d. nitrogen fertilizer
✔✔Why are some pesticides classified as "restricted use?" - ✔✔Their use is a hazard to
the applicator or the environment
✔✔What does not have to be on your application records:
a. relative humidity
b. wind conditions - ✔✔a. relative humidity
✔✔Organophosphate and carbamate insecticides have the most direct effects on what
major body system? - ✔✔Nervous system
✔✔Which of the following pesticide characteristics contribute to an increased potential
for groundwater contamination:
a. high solubility
b. high absorption to soils
c. relatively quick degradation properties
d. high volatility - ✔✔a. high solubility
✔✔Pre-harvest intervals stated on a pesticide label are designed to _____. - ✔✔protect
produce from residues over tolerances
, ✔✔For which pesticides can 2-PAM be used as an antidote? - ✔✔organophosphates
✔✔Which conditions contribute to most spray drift? - ✔✔Small orifice, high pressure
✔✔EPA - ✔✔Regulates federal pesticide and environmental issues
✔✔OSHA - ✔✔Occupational Safety and Health Administration- Regulates worker safety
issues
✔✔DOT - ✔✔Regulates Transportation Issues
✔✔L&I - ✔✔Regulates employee safety
✔✔Define the difference between Absorption vs Adsorption - ✔✔Absorbed vs Adhered
✔✔Phytotoxicity - ✔✔The toxic effect by a compound on plant growth
✔✔Emulsifiable Concentrate - ✔✔Liquid formulations with the active ingredient
dissolved in one or more petroleum solvents
✔✔Adjuvant - ✔✔A chemical added to a pesticide to performance and safety
✔✔Surfactant - ✔✔Adjuvant that alter the dispersing, spreading, and wetting properties
✔✔List the signal words from high toxicity to low - ✔✔Danger-Posion
Danger-Peligro (Corrosion)
Warning
Caution
✔✔REI - ✔✔Restricted-entry interval
✔✔Volatilization - ✔✔The transformation of a solid or liquid into a gas
✔✔Microbial Degration - ✔✔When microorganisms use pesticide as food
✔✔FIFRA - ✔✔Grants the EPA the authority to regulate pesticides
✔✔SLN - ✔✔Special Location Need
✔✔The most common cause for growth of moss in lawns is: - ✔✔Lack of soil fertility
✔✔Best time to spray pesticides for moss, algae, lichen: - ✔✔Winter
SAFETY REVIEW EXAMS UPDATED QUESTIONS
AND ANSWERS SURE A+
✔✔What WA State agency is responsible for respirators? - ✔✔Dept. Labor and
Industries
✔✔Select the condition that could help reduce pesticide volatilization:
a. high air temps
b. low relative humidity
c. incorporation
d. small droplets
e. wet soils - ✔✔b. low relative humidity
✔✔Pesticide absorption is greatest in coarse, sandy soils (T/F) - ✔✔False
✔✔Runoff is more likely from a water-saturated soil than from an unsaturated soil. -
✔✔True
✔✔Pesticide degration processes can be beneficial because they reduce the amount of
pesticide residue in the environment (T/F) - ✔✔True
,✔✔The upper level of the water saturated zone in the soil is called the _____. -
✔✔Water table
✔✔Pesticide properties have little effect on whether a chemical will reach the
groundwater (T/F) - ✔✔False
✔✔Pesticides can reach groundwater through _____. - ✔✔Leaching
✔✔Fish kills most commonly result from a pollution of the water by _____. -
✔✔Insecticides
✔✔The most common way for pesticides to enter your body is through _____. -
✔✔Dermal absorption
✔✔When using an emulsifiable concentrate formulation, what do you need to
remember? - ✔✔This formulation may have a high phytotoxicity hazard
✔✔Which of the following is not registered as a pesticide under WA state law:
a. drift retardants
b. plant growth regulator
c. nematicides
d. nitrogen fertilizer - ✔✔d. nitrogen fertilizer
✔✔Why are some pesticides classified as "restricted use?" - ✔✔Their use is a hazard to
the applicator or the environment
✔✔What does not have to be on your application records:
a. relative humidity
b. wind conditions - ✔✔a. relative humidity
✔✔Organophosphate and carbamate insecticides have the most direct effects on what
major body system? - ✔✔Nervous system
✔✔Which of the following pesticide characteristics contribute to an increased potential
for groundwater contamination:
a. high solubility
b. high absorption to soils
c. relatively quick degradation properties
d. high volatility - ✔✔a. high solubility
✔✔Pre-harvest intervals stated on a pesticide label are designed to _____. - ✔✔protect
produce from residues over tolerances
, ✔✔For which pesticides can 2-PAM be used as an antidote? - ✔✔organophosphates
✔✔Which conditions contribute to most spray drift? - ✔✔Small orifice, high pressure
✔✔EPA - ✔✔Regulates federal pesticide and environmental issues
✔✔OSHA - ✔✔Occupational Safety and Health Administration- Regulates worker safety
issues
✔✔DOT - ✔✔Regulates Transportation Issues
✔✔L&I - ✔✔Regulates employee safety
✔✔Define the difference between Absorption vs Adsorption - ✔✔Absorbed vs Adhered
✔✔Phytotoxicity - ✔✔The toxic effect by a compound on plant growth
✔✔Emulsifiable Concentrate - ✔✔Liquid formulations with the active ingredient
dissolved in one or more petroleum solvents
✔✔Adjuvant - ✔✔A chemical added to a pesticide to performance and safety
✔✔Surfactant - ✔✔Adjuvant that alter the dispersing, spreading, and wetting properties
✔✔List the signal words from high toxicity to low - ✔✔Danger-Posion
Danger-Peligro (Corrosion)
Warning
Caution
✔✔REI - ✔✔Restricted-entry interval
✔✔Volatilization - ✔✔The transformation of a solid or liquid into a gas
✔✔Microbial Degration - ✔✔When microorganisms use pesticide as food
✔✔FIFRA - ✔✔Grants the EPA the authority to regulate pesticides
✔✔SLN - ✔✔Special Location Need
✔✔The most common cause for growth of moss in lawns is: - ✔✔Lack of soil fertility
✔✔Best time to spray pesticides for moss, algae, lichen: - ✔✔Winter
