Certification Examination Practice

Illinois Grain Elevator Operator Certification Examination Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of a grain elevator?
• To cook grain
• To store and handle grain
• To package grain for retail sale
• To sell grain to consumers

Rationale: Grain elevators are designed to store large quantities of

grain and facilitate its handling, loading, and transfer.

• Which of the following is a common method for cleaning grain before

storage?

• Heating grain to 200°F 1 / 4

• Screening and aspirating
• Freezing grain
• Spraying with water

Rationale: Screening removes large debris and aspirating removes

dust and lighter impurities.

• What is the primary hazard associated with grain dust in elevators?
• Pests
• Mold
• Explosion
• Spoilage

Rationale: Grain dust is highly combustible and can cause explosions

if suspended in air and ignited.

• Which equipment is commonly used to move grain vertically in an

elevator?

• Conveyors
• Belt feeders
• Bucket elevators
• Augers

Rationale: Bucket elevators are used to lift grain vertically from

lower bins to higher storage bins.

• What is the maximum moisture content recommended for storing

corn long-term in a grain elevator?

A. 25% 2 / 4

B. 18%

C. 15%

D. 10%

Rationale: Storing corn above 15% moisture increases the risk of

mold growth and spoilage.

• What is the purpose of aeration in grain storage?
• To cook the grain
• To control temperature and moisture
• To add nutrients
• To remove insects

Rationale: Aeration helps maintain uniform temperature and

moisture, reducing spoilage and insect infestation.

• Which insect is a common pest in stored grain?
• Corn borer
• Leafhopper
• Grain beetle
• Japanese beetle

Rationale: Grain beetles, such as the sawtoothed grain beetle, infest

stored grain and can cause damage and contamination.

• What safety device is critical to prevent grain engulfment in storage

bins?

• Respirators
• Hard hats 3 / 4

• Harness and lifeline
• Fire extinguisher

Rationale: Workers entering bins must use a harness and lifeline to

prevent fatal engulfment accidents.

• What is the first step in grain elevator fire prevention?
• Installing sprinklers
• Controlling dust accumulation
• Using fire-resistant bins
• Spraying grain with water

Rationale: Controlling dust accumulation reduces the risk of

explosive fires.

• What type of scale is typically used to weigh grain trucks at an

elevator?

• Spring scale
• Hanging scale
• Platform or truck scale
• Hanging basket scale

Rationale: Truck scales measure the total weight of grain delivered

accurately.

• Which of the following is a sign of mold in stored grain?
• White, powdery growth
• Foul odor and discoloration
• Smooth kernel surfaces
• / 4