NATIONAL PESTICIDE APPLICATOR
CERTIFICATION CORE MANUAL PRACTICE
EXAM 2026 PRACTICE QUESTIONS AND
CORRECT ANSWERS WITH DETAILED
EXPLANATIONS PESTICIDE SAFETY AND
CERTIFICATION EXAM PREP
Which statement is true about pesticide effects on non-target organisms?
A. Dirft is one of the primary causes of damage to crops and other plants in
adjacent areas.
B. Granular or pellleted pesticide fromulations are the safest for preventing
injury to birds and other animals.
C. Most livestock poisoning by pesticides occurs when they breathe in
vapors from nearby treated fields.
D. Very few herbicides can cause phytotoxic injury. - CORRECT ANSWER-
A
Which items should be stored at the pesticide storage site?
A. Food and feed.
B. PPE for mixing and loading and medical supplies.
C. Spill cleanup kit and emergency PPE.
D. Medication and veterinary supplies. - CORRECT ANSWER-C
Which statement is true about storage of pesticide containers?
,A. You may store pesticides in bottles or jars as long as they are
appropriately labeled.
B. Keep bags of wettable and soluble powders open, so they are exposed
tothe air.
C. Store liquid formulations and small containers of dry formulations on
wood shelving.
D. Place bulk or mini-bulk tanks on a reinforced concrete pad or other
impermeable surface. - CORRECT ANSWER-D
What should be done with cancelled pesticide products that can no longer
be legally used?
A. Use them up by applying them at a rate greater than specified by the
label.
B. Store them in the same area as other pesticides but mark them as
outdated.
C. Recycle them by mixing them with other pesticide products.
D. Treat as hazardous waste and dispose of accordingly. - CORRECT
ANSWER-D
Which statement is true about potential problems from pesticide fires?
A. Pesticides containing oils or petroleum products are the least flammable.
B. Vapors or smoke from pesticide fires may be harmful to animals but not
to plants.
C. Pesticides may be flammable but never explosive.
D. Runoff from a pesticide fire site may contain highly toxic chemicals. -
CORRECT ANSWER-D
, Which is not recommended safety precaution for a pesticide storage
facility?
A. Locate storage facilities as far as possible from places where people and
animals live.
B. Post signs that indicate combustible materials are stored at the facility.
C. Store glass or pressurized containers in sunlight.
D. Keep foam-type fire extinguishers in all storage areas. - CORRECT
ANSWER-C
Which statement is true about chemical incompatibility?
A. It is not necessary to consider chemical compatibility effects when
mixing a pesticide with hard water, chlorinated water, or fertilizers.
B. Increasing the chemial activity of two or more products mixed together is
always harmful.
C. Chemical incompatibiltiy occurs when the activity of the mixed products
is reduced.
D. Labels do not proved information on avoiding chemical incompatibility.
- CORRECT ANSWER-C
Which is not a means of preventing contamination of water sources?
A. When filling the tank, keep the hose down in the pesticide mixture.
B. Use a check valve, anti-siphoning device, or backflow preventer when
pumping water directly from the source into a mix tank.
C. Mix and load pesticides on a containment pad.
CERTIFICATION CORE MANUAL PRACTICE
EXAM 2026 PRACTICE QUESTIONS AND
CORRECT ANSWERS WITH DETAILED
EXPLANATIONS PESTICIDE SAFETY AND
CERTIFICATION EXAM PREP
Which statement is true about pesticide effects on non-target organisms?
A. Dirft is one of the primary causes of damage to crops and other plants in
adjacent areas.
B. Granular or pellleted pesticide fromulations are the safest for preventing
injury to birds and other animals.
C. Most livestock poisoning by pesticides occurs when they breathe in
vapors from nearby treated fields.
D. Very few herbicides can cause phytotoxic injury. - CORRECT ANSWER-
A
Which items should be stored at the pesticide storage site?
A. Food and feed.
B. PPE for mixing and loading and medical supplies.
C. Spill cleanup kit and emergency PPE.
D. Medication and veterinary supplies. - CORRECT ANSWER-C
Which statement is true about storage of pesticide containers?
,A. You may store pesticides in bottles or jars as long as they are
appropriately labeled.
B. Keep bags of wettable and soluble powders open, so they are exposed
tothe air.
C. Store liquid formulations and small containers of dry formulations on
wood shelving.
D. Place bulk or mini-bulk tanks on a reinforced concrete pad or other
impermeable surface. - CORRECT ANSWER-D
What should be done with cancelled pesticide products that can no longer
be legally used?
A. Use them up by applying them at a rate greater than specified by the
label.
B. Store them in the same area as other pesticides but mark them as
outdated.
C. Recycle them by mixing them with other pesticide products.
D. Treat as hazardous waste and dispose of accordingly. - CORRECT
ANSWER-D
Which statement is true about potential problems from pesticide fires?
A. Pesticides containing oils or petroleum products are the least flammable.
B. Vapors or smoke from pesticide fires may be harmful to animals but not
to plants.
C. Pesticides may be flammable but never explosive.
D. Runoff from a pesticide fire site may contain highly toxic chemicals. -
CORRECT ANSWER-D
, Which is not recommended safety precaution for a pesticide storage
facility?
A. Locate storage facilities as far as possible from places where people and
animals live.
B. Post signs that indicate combustible materials are stored at the facility.
C. Store glass or pressurized containers in sunlight.
D. Keep foam-type fire extinguishers in all storage areas. - CORRECT
ANSWER-C
Which statement is true about chemical incompatibility?
A. It is not necessary to consider chemical compatibility effects when
mixing a pesticide with hard water, chlorinated water, or fertilizers.
B. Increasing the chemial activity of two or more products mixed together is
always harmful.
C. Chemical incompatibiltiy occurs when the activity of the mixed products
is reduced.
D. Labels do not proved information on avoiding chemical incompatibility.
- CORRECT ANSWER-C
Which is not a means of preventing contamination of water sources?
A. When filling the tank, keep the hose down in the pesticide mixture.
B. Use a check valve, anti-siphoning device, or backflow preventer when
pumping water directly from the source into a mix tank.
C. Mix and load pesticides on a containment pad.
