MASSACHUSETTS PESTICIDE LICENSE EXAM
[2026] | UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS | A+
• Acaricide -✓✓ANSWER: a pesticide used to control mites and ticks. a Miticide is
a type of acaricide
• Acidic -✓✓ANSWER: having a ph less than 7
• Acidifiers = Buffers -✓✓ANSWER: 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 -✓✓ANSWER: a predetermined level of pest infestation or
damage at which some type of pest management action must be taken
• Activated Charcoal -✓✓ANSWER: A finely ground charcoal that adsorbs
chemicals.
• Active Ingredient (AI) -✓✓ANSWER: The chemical or chemicals in a product
responsible for pesticidal activity.
• Acute effect -✓✓ANSWER: a symptom, illness, or injury that occurs shortly after
the exposure to a pesticide
• Acute Exposure -✓✓ANSWER: An exposure to a single dose of pesticide
,• Acute Rodenticide -✓✓ANSWER: a pesticide that is capable of killing a rodent
after a single feeding
• Acute Toxicity -✓✓ANSWER: 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) -✓✓ANSWER: a substance added to a pesticide to improve
its effectiveness or safety
• Adsorption -✓✓ANSWER: the process whereby chemicals are bound to a
surface by physical or chemical attraction
• Adulterated Pesticide -✓✓ANSWER: A pesticide that does not conform to the
specified standard or quality as documented on its label or labeling
• Aerosol -✓✓ANSWER: 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 -✓✓ANSWER: The process of stirring or mixing the contents of a spray
tank
• Air-blast sprayer -✓✓ANSWER: 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 -✓✓ANSWER: relatively simple plants that are photosynthetic and contain
chlorophyll
• Algaecide (algicide) -✓✓ANSWER: a pesticide used to kill or inhibit algae
• Alkaline -✓✓ANSWER: having a pH greater than 7, als
• Allergic Effects -✓✓ANSWER: a hypersensitivity to a specific substance which is
not due to the substance's toxicity
• annual -✓✓ANSWER: a plant that completes its life cycle in one year
• antidote -✓✓ANSWER: a practical treatment used to counteract the effects of
pesticide poisoning
• Antifouling Paint -✓✓ANSWER: a paint containing a pesticide (ex: Copper) that
prevents aquatic organisms from attaching to underwater structures (such as
boat hulls, crab pots and water intake pipes)
• Antisiphoning Device -✓✓ANSWER: a mechanism that prevents back flow of a
pesticide mix from the spray tank into a water source
• application rate -✓✓ANSWER: the amount of pesticide applied to a known area
(such as an acre or 1,000 square feet ) volume or animal
[2026] | UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS | A+
• Acaricide -✓✓ANSWER: a pesticide used to control mites and ticks. a Miticide is
a type of acaricide
• Acidic -✓✓ANSWER: having a ph less than 7
• Acidifiers = Buffers -✓✓ANSWER: 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 -✓✓ANSWER: a predetermined level of pest infestation or
damage at which some type of pest management action must be taken
• Activated Charcoal -✓✓ANSWER: A finely ground charcoal that adsorbs
chemicals.
• Active Ingredient (AI) -✓✓ANSWER: The chemical or chemicals in a product
responsible for pesticidal activity.
• Acute effect -✓✓ANSWER: a symptom, illness, or injury that occurs shortly after
the exposure to a pesticide
• Acute Exposure -✓✓ANSWER: An exposure to a single dose of pesticide
,• Acute Rodenticide -✓✓ANSWER: a pesticide that is capable of killing a rodent
after a single feeding
• Acute Toxicity -✓✓ANSWER: 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) -✓✓ANSWER: a substance added to a pesticide to improve
its effectiveness or safety
• Adsorption -✓✓ANSWER: the process whereby chemicals are bound to a
surface by physical or chemical attraction
• Adulterated Pesticide -✓✓ANSWER: A pesticide that does not conform to the
specified standard or quality as documented on its label or labeling
• Aerosol -✓✓ANSWER: 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 -✓✓ANSWER: The process of stirring or mixing the contents of a spray
tank
• Air-blast sprayer -✓✓ANSWER: 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 -✓✓ANSWER: relatively simple plants that are photosynthetic and contain
chlorophyll
• Algaecide (algicide) -✓✓ANSWER: a pesticide used to kill or inhibit algae
• Alkaline -✓✓ANSWER: having a pH greater than 7, als
• Allergic Effects -✓✓ANSWER: a hypersensitivity to a specific substance which is
not due to the substance's toxicity
• annual -✓✓ANSWER: a plant that completes its life cycle in one year
• antidote -✓✓ANSWER: a practical treatment used to counteract the effects of
pesticide poisoning
• Antifouling Paint -✓✓ANSWER: a paint containing a pesticide (ex: Copper) that
prevents aquatic organisms from attaching to underwater structures (such as
boat hulls, crab pots and water intake pipes)
• Antisiphoning Device -✓✓ANSWER: a mechanism that prevents back flow of a
pesticide mix from the spray tank into a water source
• application rate -✓✓ANSWER: the amount of pesticide applied to a known area
(such as an acre or 1,000 square feet ) volume or animal
