National Pesticide Applicator Certification Core
Manual – Exam Study Questions (Updated
Version)
Correct answers are marked with ✔️✔️
1. What is the main purpose of pesticide labeling?
A. To advertise product benefits
B. To provide legal instructions for safe use
C. To show expiration dates
D. To show mixing ratios only
2. Which signal word indicates the highest toxicity?
A. Warning
B. Caution
C. Hazard
D. Danger
3. What does PPE stand for in pesticide safety?
A. Personal Pollution Equipment
B. Proper Performance Evaluation
C. Personal Protective Equipment
D. Product Protection Essentials
4. Which part of the body absorbs pesticides the fastest?
A. Hands
B. Feet
,C. Forearms
D. Eyes
5. What is the first action to take when pesticide spills on your skin?
A. Call 911
B. Remove contaminated clothing and wash skin immediately
C. Wait for symptoms
D. Apply first aid cream
6. The term “restricted-use pesticide” means:
A. It is only sold online
B. It requires special training and certification to apply
C. It cannot be mixed with water
D. It is only used in agriculture
7. Which formulation is represented by the abbreviation “EC”?
A. Emulsifiable Concentrate
B. Encapsulated Container
C. Enhanced Chemical
D. Emergency Concentration
8. Drift is least likely to occur under which condition?
A. High wind
B. Temperature inversion
C. Calm winds under 3 mph
D. Hot afternoons
9. What is the purpose of pesticide calibration?
A. To increase equipment speed
B. To ensure the correct application rate
, C. To reduce tank size
D. To meet inspection requirements
10. The label phrase “Keep Out of Reach of Children” is known as:
A. Precautionary statement
B. First aid instruction
C. Environmental hazard
D. Storage direction
11. A pesticide with an LD₅₀ of 5 mg/kg is considered:
A. Slightly toxic
B. Moderately toxic
C. Highly toxic
D. Not toxic
12. What is the best way to prevent contamination of water sources?
A. Use more pesticide
B. Mix chemicals near wells
C. Use a buffer zone near water
D. Wash equipment in rivers
13. The re-entry interval (REI) refers to:
A. How long pesticide stays effective
B. How long to wait before entering a treated area
C. Storage shelf life
D. Time before harvest
14. Back-siphoning can occur when:
A. The hose is above the tank
B. The fill hose is submerged in the spray tank
Manual – Exam Study Questions (Updated
Version)
Correct answers are marked with ✔️✔️
1. What is the main purpose of pesticide labeling?
A. To advertise product benefits
B. To provide legal instructions for safe use
C. To show expiration dates
D. To show mixing ratios only
2. Which signal word indicates the highest toxicity?
A. Warning
B. Caution
C. Hazard
D. Danger
3. What does PPE stand for in pesticide safety?
A. Personal Pollution Equipment
B. Proper Performance Evaluation
C. Personal Protective Equipment
D. Product Protection Essentials
4. Which part of the body absorbs pesticides the fastest?
A. Hands
B. Feet
,C. Forearms
D. Eyes
5. What is the first action to take when pesticide spills on your skin?
A. Call 911
B. Remove contaminated clothing and wash skin immediately
C. Wait for symptoms
D. Apply first aid cream
6. The term “restricted-use pesticide” means:
A. It is only sold online
B. It requires special training and certification to apply
C. It cannot be mixed with water
D. It is only used in agriculture
7. Which formulation is represented by the abbreviation “EC”?
A. Emulsifiable Concentrate
B. Encapsulated Container
C. Enhanced Chemical
D. Emergency Concentration
8. Drift is least likely to occur under which condition?
A. High wind
B. Temperature inversion
C. Calm winds under 3 mph
D. Hot afternoons
9. What is the purpose of pesticide calibration?
A. To increase equipment speed
B. To ensure the correct application rate
, C. To reduce tank size
D. To meet inspection requirements
10. The label phrase “Keep Out of Reach of Children” is known as:
A. Precautionary statement
B. First aid instruction
C. Environmental hazard
D. Storage direction
11. A pesticide with an LD₅₀ of 5 mg/kg is considered:
A. Slightly toxic
B. Moderately toxic
C. Highly toxic
D. Not toxic
12. What is the best way to prevent contamination of water sources?
A. Use more pesticide
B. Mix chemicals near wells
C. Use a buffer zone near water
D. Wash equipment in rivers
13. The re-entry interval (REI) refers to:
A. How long pesticide stays effective
B. How long to wait before entering a treated area
C. Storage shelf life
D. Time before harvest
14. Back-siphoning can occur when:
A. The hose is above the tank
B. The fill hose is submerged in the spray tank
