EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES |2026 Q&A |
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1. Which of the following best describes an “active ingredient” in a pesticide
product?
A. The component that makes up the bulk of the product
B. The component that acts as a filler
C. The chemical responsible for the pesticidal effect
D. The ingredient that enhances the product’s color
The active ingredient is the chemical that directly controls, kills, or repels the
target pest.
2. What is the main purpose of the EPA registration number on a pesticide
label?
A. To indicate the expiration date
B. To identify the specific pesticide product and formulation
C. To specify the manufacturer’s address
D. To certify organic approval
Each pesticide product approved by the EPA has a unique registration
number that tracks its legal status.
3. What type of pesticide formulation is most likely to drift during application?
A. Granules (G)
B. Dusts (D)
C. Wettable powders (WP)
D. Baits (B)
Dust formulations are light and prone to airborne movement, increasing
drif t risk.
,4. The signal word “DANGER–POISON” with a skull and crossbones means:
A. Slightly toxic pesticide
B. Highly toxic pesticide
C. Moderately toxic pesticide
D. Non-toxic pesticide
The “DANGER–POISON” signal word indicates the highest level of acute
toxicity.
5. Which PPE item is most important when mixing concentrated pesticides?
A. Chemical-resistant gloves
B. Cotton overalls
C. Sunglasses
D. Leather boots
Chemical-resistant gloves prevent dermal exposure to concentrated
chemicals.
6. What is the purpose of a pesticide label?
A. For marketing purposes
B. To identify the manufacturer only
C. To provide legal directions for safe and effective use
D. To promote product sales
The label is a legal document defining correct usage, restrictions, and safety
guidelines.
7. Which law regulates pesticide distribution and use in the United States?
A. CERCLA
B. FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act)
C. RCRA
D. TSCA
FIFRA governs registration, labeling, and usage of pesticides nationwide.
8. The LD50 value indicates:
A. The chemical’s environmental persistence
B. The flash point of a pesticide
C. The dose that kills 50% of test animals
, D. The product’s shelf life
LD50 is a standard measure of acute toxicity expressed in mg/kg.
9. When mixing pesticides, the best way to prevent back-siphoning is to:
A. Stir the tank slowly
B. Use an air gap or backflow prevention device
C. Mix away from sunlight
D. Fill the tank halfway
An air gap prevents contaminated liquid from flowing back into the water
source.
10. Pesticides classified as “Restricted Use” can be applied only by:
A. Anyone over 18 years old
B. Certified applicators or persons under their supervision
C. Farm owners only
D. Public health officials
Restricted-use pesticides pose higher risks and require certified applicator
handling.
11. What should an applicator do first if pesticide spills onto their clothing?
A. Wipe it off
B. Remove the clothing immediately
C. Apply water to dilute it
D. Continue working
Promptly removing contaminated clothing minimizes skin exposure.
12. Which of the following is an example of a systemic pesticide?
A. A pesticide absorbed and transported within the plant
B. A pesticide acting only on contact
C. A bait formulation
D. A residual surface spray
Systemic pesticides move through plant tissues to affect internal pests.