Core Applicator Prep Free practice test · By state · By topic · Full pack $19

States › Colorado

Colorado Pesticide License Practice Test (Free Core Exam Questions)

Preparing for the Colorado pesticide applicator exam? In Colorado, applicator certification and licensing are handled by the state pesticide regulatory agency, generally the Colorado Department of Agriculture. Like every state, Colorado requires applicators to show competency in the core (general standards) areas set out in federal rules: label comprehension, safety, environmental protection, pests, pesticides, equipment, application methods, laws, supervision, and professionalism. Most candidates also take a state laws section and one or more category exams.

Confirm current exam requirements, manuals, fees, and testing locations directly with the Colorado Department of Agriculture. This site is unofficial and not affiliated with any Colorado agency.

10 free Colorado core exam practice questions

1. Equipment should be recalibrated when:

Answer: C. Any change in nozzles, pressure, ground speed, or formulation can change output.

2. Applying a pesticide at a HIGHER rate than the label allows is:

Answer: A. Exceeding labeled rates violates the labeling and can cause injury, illegal residues, and environmental harm.

3. Under federal rules, the minimum age to become a certified commercial applicator is:

Answer: A. 40 CFR 171.103 sets 18 as the minimum age for commercial applicator certification.

4. If a supervised worker's equipment isn't working correctly, the supervisor should:

Answer: B. Part of supervision is making sure equipment is maintained and calibrated for proper use.

5. A professional applicator notices a small leak in a stored container. The best action is:

Answer: A. Handle leaks promptly: contain, clean up, keep the product identified, and follow label and emergency guidance.

6. One acre equals approximately how many square feet?

Answer: C. 1 acre = 43,560 square feet.

7. A label statement uses the word "should" (for example, "Applicators should avoid spraying near blooming plants"). This language is:

Answer: A. "Should" and "recommended" are advisory. Mandatory language uses words like "must," "shall," and "do not."

8. If a pesticide gets in someone's eyes, first aid usually calls for rinsing the eye with clean running water for at least:

Answer: B. Hold the eye open and flush gently with clean water for at least 15 minutes, then get medical help, following the label's first aid statement.

9. To reduce risk to honey bees, an applicator should generally:

Answer: A. Bee-toxic products should not reach flowering plants while bees are active. Labels may carry specific pollinator protection language.

10. Rotating crops, adjusting planting dates, and sanitation are examples of:

Answer: C. Cultural practices change the environment to make it less favorable to pests.
0 / 0 correct

How to study for the Colorado core exam

  1. Get the core manual edition your state uses (many states are moving to the 2025 3rd edition national core manual during 2026) and any Colorado law supplement.
  2. Take a timed practice test to find your weak areas.
  3. Re-read those chapters, then retest until you're consistently above passing.
  4. Memorize the high-yield facts: signal words, first aid, PPE rules, drift and inversions, and basic calibration math.

Full pack: 5 practice tests + cheat sheet

$19 one-time

Pay $19 with PayPal

How delivery works: after paying, go to the After Payment page and tap "I've paid" to open your pack instantly (online tests, PDF and cheat sheet). Details.

Other states: Connecticut · Delaware · Florida · California · Arkansas · all states