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Practice Test 3 (50 questions)

Answer all 50, then check your score. Aim for 70% or higher.

1. A product carries the signal word DANGER but no skull and crossbones. This most likely means:

Answer: D. DANGER without "POISON" signals corrosive or severe eye and skin effects rather than high systemic toxicity.

2. Breakdown of pesticides by sunlight is called:

Answer: B. Photodegradation is breakdown by light. Microbial degradation is by microorganisms, and hydrolysis is by reaction with water.

3. Beneficial insects can be conserved by:

Answer: C. Selective products and threshold-based treatments protect natural enemies.

4. A nozzle's output is measured at 36 oz/min, while a new nozzle of the same type produces 32 oz/min. The worn nozzle should be:

Answer: A. (36 - 32) / 32 = 12.5%, above the common 10% replacement guide.

5. A respirator user must generally:

Answer: C. Tight-fitting respirators need medical evaluation and fit testing. Facial hair can break the seal.

6. Ready-to-use (RTU) formulations:

Answer: B. RTUs need no mixing. They are often sold in small containers.

7. Liquid pesticides in storage should generally be kept:

Answer: D. Store liquids on lower shelves so leaks don't drip onto dry materials.

8. A pesticide product that has been stored for years and has an unreadable label:

Answer: B. Unidentified or deteriorated products shouldn't be used. Contact your state agency about disposal programs.

9. Label directions for PPE are:

Answer: C. Required PPE on the label is a legal minimum. More protection is allowed.

10. Why must ground speed be kept constant during application?

Answer: B. Output per acre changes with speed unless the system compensates, so hold a steady speed.

11. Eradication is a goal most often associated with:

Answer: B. Eradication targets invasive or quarantine pests in a defined area, usually through regulatory programs.

12. A noncertified applicator applying RUPs should have immediate access to:

Answer: D. Labeling and a way to contact the supervisor are basic requirements.

13. Which body area generally absorbs pesticides the fastest?

Answer: A. The genital area absorbs pesticides far faster than the palms or forearms. Wash hands before using the toilet.

14. A 400-gallon tank is applied at 25 GPA. The product rate is 1.5 pints per acre. How much product goes in a full tank?

Answer: D. 400 / 25 = 16 acres per tank. 16 x 1.5 pints = 24 pints = 3 gallons.

15. Which droplet size is MOST prone to drift?

Answer: A. Fine droplets are lighter, evaporate faster, and stay airborne longer.

16. A backpack sprayer is calibrated to apply 1.5 gallons per 1,000 sq ft. How much spray is needed for 3,000 sq ft?

Answer: A. 3,000 / 1,000 = 3 units x 1.5 gal = 4.5 gallons.

17. Weeds that complete their life cycle in one year are called:

Answer: C. Annuals complete their life cycle within one year. Biennials take two years, and perennials live more than two.

18. Hard water or alkaline water in a spray tank can:

Answer: A. Water quality (pH, hardness) affects some products. The label may recommend conditioning agents.

19. A biopesticide is:

Answer: C. Biopesticides include microbial, biochemical, and plant-incorporated protectant types.

20. Doubling the spray pressure at a nozzle roughly:

Answer: D. Flow rises with the square root of pressure: doubling pressure gives about 1.4 times the flow. Pressure is a poor way to make large rate changes and increases fine droplets.

21. Suspicious purchase requests, such as a stranger wanting a large amount of a highly toxic RUP with cash and no credentials, should be:

Answer: C. Part of chemical security is recognizing and reporting suspicious activity.

22. Phytotoxicity means:

Answer: C. Phytotoxicity is plant injury, for example from drift onto sensitive crops or from high temperatures with some formulations.

23. The label lists "Do not graze treated areas." A cattle owner asks to graze two days after application. You should:

Answer: C. Grazing restrictions protect livestock and food residues and must be followed.

24. An applicator discovers that a treatment drifted onto a neighbor's property. The professional action is to:

Answer: C. Honest reporting and cooperation are expected, and may be legally required.

25. A label statement reads "Do not apply when wind speed exceeds 10 mph." This is:

Answer: D. "Do not" statements are mandatory directions that must be followed.

26. Soluble powders (SP) form a ___ when mixed with water.

Answer: C. SPs dissolve completely, forming a true solution that needs little agitation after mixing.

27. A seed treatment applies pesticide:

Answer: A. Seed treatments protect seeds and seedlings. Treated seed must be handled, labeled, and disposed of properly.

28. The phrase "It is a violation of Federal law to use this product in a manner inconsistent with its labeling" appears:

Answer: A. This misuse statement appears on registered pesticide labels.

29. Bird kills can result from:

Answer: C. Birds may eat exposed granules or baits or contaminated prey. Incorporate or clean up spilled granules as the label directs.

30. For inhalation exposure, first aid usually begins with:

Answer: D. Move the victim away from vapors to fresh air, and call for help. Protect yourself before entering the area.

31. Particle (spray) drift is mainly influenced by:

Answer: B. Drift depends on droplet size and weather conditions, plus boom height and nozzle and pressure choice.

32. Under the WPS, the minimum age for pesticide handlers and early-entry workers is:

Answer: C. The revised WPS sets 18 as the minimum age for handlers and early-entry workers.

33. Under FIFRA Section 2(ee), which of these is NOT permitted?

Answer: A. Using a product on an unlisted site isn't allowed. 2(ee) permits certain deviations only if the labeling doesn't prohibit them.

34. Labeling-specific safety information for a noncertified applicator includes:

Answer: C. Supervisors must make sure the noncertified applicator understands product-specific requirements.

35. A basal bark treatment is:

Answer: B. Basal bark treatments target the lower stem of brush and trees.

36. After application equipment is used, it should be:

Answer: B. Proper cleaning prevents corrosion, cross-contamination, and later crop injury.

37. Why does the label list the "brand" or trade name AND the common/chemical name of the active ingredient?

Answer: A. Several brands can share an active ingredient. The common or chemical name tells you exactly what you are using.

38. Treating a whole structure for a pest found only in one room when a targeted treatment would work:

Answer: D. Match the treatment scope to the actual infestation.

39. A buffering agent is used to:

Answer: A. Some pesticides break down faster in alkaline water. Buffers help keep pH in a suitable range.

40. Which is an example of a non-point source of contamination?

Answer: D. Non-point sources are diffuse, coming from widespread normal applications.

41. A post-emergence herbicide is applied:

Answer: C. Post-emergence herbicides target actively growing, emerged weeds.

42. Hosing a pesticide spill into a ditch:

Answer: A. Never wash spills into drains or ditches. Contain and absorb them.

43. Mixing a pesticide with fertilizer is:

Answer: C. Section 2(ee) allows mixing with fertilizer if the labeling doesn't prohibit it.

44. A certified applicator's credential in one state:

Answer: C. Certification is issued by state (or tribal or federal) authorities. Reciprocity varies.

45. Tree injection applications:

Answer: B. Injection delivers systemic products internally, with minimal environmental release.

46. Which statement about acute and chronic toxicity is true?

Answer: D. Acute and chronic toxicity are different. Repeated low exposures may cause long-term effects.

47. Mode of action refers to:

Answer: C. Mode of action is the biological process a pesticide disrupts. Rotating modes of action slows resistance.

48. A private applicator (under federal definitions) is a certified applicator who uses RUPs:

Answer: D. Private applicators use RUPs to produce agricultural commodities on their own or their employer's land, not for hire.

49. If state law requires stricter recordkeeping than federal law, the applicator must follow:

Answer: B. Applicators must comply with both federal and state laws, meeting the stricter standard.

50. Children are at particular risk from pesticides because:

Answer: B. Curiosity, hand-to-mouth behavior, and physiology make children especially vulnerable. Store products locked and out of reach.
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