Massachusetts Pesticide License Exam
study guide COMPLETE EXAM Questions
and Answers (Verified Answers) (Latest
Update 2026)
absorption -CORRECTANSWER the movement of a chemical into plants, animals
(including humans), microorganisms or soil
Acaricide -CORRECTANSWER a pesticide used to control mites and ticks. a Miticide is
a type of acaricide
Acidic -CORRECTANSWER having a ph less than 7
Acidifiers = Buffers -CORRECTANSWER adjuvants used to retard chemical
degradation of pesticides in the spray tank by lowering the pH of alkaline water used as
a diluent
Action Threshold -CORRECTANSWER a predetermined level of pest infestation or
damage at which some type of pest management action must be taken
Activated Charcoal -CORRECTANSWER A finely ground charcoal that adsorbs
chemicals.
,Active Ingredient (AI) -CORRECTANSWER The chemical or chemicals in a product
responsible for pesticidal activity.
Acute effect -CORRECTANSWER a symptom, illness, or injury that occurs shortly after
the exposure to a pesticide
Acute Exposure -CORRECTANSWER An exposure to a single dose of pesticide
Acute Rodenticide -CORRECTANSWER a pesticide that is capable of killing a rodent
after a single feeding
Acute Toxicity -CORRECTANSWER The ability of a pesticide to cause illness after a
single exposure. LD50 and LC50 are common indicators of the degree of acute toxicity
Adjuvant (Additive) -CORRECTANSWER a substance added to a pesticide to improve
its effectiveness or safety
Adsorption -CORRECTANSWER the process whereby chemicals are bound to a
surface by physical or chemical attraction
Adulterated Pesticide -CORRECTANSWER A pesticide that does not conform to the
specified standard or quality as documented on its label or labeling
, Aerosol -CORRECTANSWER a liquid formulation that produces a mist or fod when
applied from a container in which it is held under pressure or from a fod-generating
machine
Agitation -CORRECTANSWER The process of stirring or mixing the contents of a spray
tank
Air-blast sprayer -CORRECTANSWER A type of pesticide application equipment that
uses a large volume of air moving at high speed to break up and disperse spray
droplets from the nozzles
Algae -CORRECTANSWER relatively simple plants that are photosynthetic and contain
chlorophyll
Algaecide (algicide) -CORRECTANSWER a pesticide used to kill or inhibit algae
Alkaline -CORRECTANSWER having a pH greater than 7, als
Allergic Effects -CORRECTANSWER a hypersensitivity to a specific substance which is
not due to the substance's toxicity
annual -CORRECTANSWER a plant that completes its life cycle in one year
study guide COMPLETE EXAM Questions
and Answers (Verified Answers) (Latest
Update 2026)
absorption -CORRECTANSWER the movement of a chemical into plants, animals
(including humans), microorganisms or soil
Acaricide -CORRECTANSWER a pesticide used to control mites and ticks. a Miticide is
a type of acaricide
Acidic -CORRECTANSWER having a ph less than 7
Acidifiers = Buffers -CORRECTANSWER adjuvants used to retard chemical
degradation of pesticides in the spray tank by lowering the pH of alkaline water used as
a diluent
Action Threshold -CORRECTANSWER a predetermined level of pest infestation or
damage at which some type of pest management action must be taken
Activated Charcoal -CORRECTANSWER A finely ground charcoal that adsorbs
chemicals.
,Active Ingredient (AI) -CORRECTANSWER The chemical or chemicals in a product
responsible for pesticidal activity.
Acute effect -CORRECTANSWER a symptom, illness, or injury that occurs shortly after
the exposure to a pesticide
Acute Exposure -CORRECTANSWER An exposure to a single dose of pesticide
Acute Rodenticide -CORRECTANSWER a pesticide that is capable of killing a rodent
after a single feeding
Acute Toxicity -CORRECTANSWER The ability of a pesticide to cause illness after a
single exposure. LD50 and LC50 are common indicators of the degree of acute toxicity
Adjuvant (Additive) -CORRECTANSWER a substance added to a pesticide to improve
its effectiveness or safety
Adsorption -CORRECTANSWER the process whereby chemicals are bound to a
surface by physical or chemical attraction
Adulterated Pesticide -CORRECTANSWER A pesticide that does not conform to the
specified standard or quality as documented on its label or labeling
, Aerosol -CORRECTANSWER a liquid formulation that produces a mist or fod when
applied from a container in which it is held under pressure or from a fod-generating
machine
Agitation -CORRECTANSWER The process of stirring or mixing the contents of a spray
tank
Air-blast sprayer -CORRECTANSWER A type of pesticide application equipment that
uses a large volume of air moving at high speed to break up and disperse spray
droplets from the nozzles
Algae -CORRECTANSWER relatively simple plants that are photosynthetic and contain
chlorophyll
Algaecide (algicide) -CORRECTANSWER a pesticide used to kill or inhibit algae
Alkaline -CORRECTANSWER having a pH greater than 7, als
Allergic Effects -CORRECTANSWER a hypersensitivity to a specific substance which is
not due to the substance's toxicity
annual -CORRECTANSWER a plant that completes its life cycle in one year
