Tennessee Category 12 — Fumigation
Pest Control Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
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1. What is the primary purpose of fumigation in pest control?
A. Surface disinfection
B. Use of gases to control pests in enclosed spaces
C. Mechanical removal of pests
D. Biological pest suppression
Answer: B
Rationale: Fumigation uses toxic gases to penetrate enclosed spaces
and eliminate pests in all life stages.
2. Which fumigant is commonly used in grain storage?
A. Chlorine
B. Phosphine
C. Pyrethrin
, D. Boric acid
Answer: B
Rationale: Phosphine gas is widely used for stored grain pest control
due to its deep penetration ability.
3. What is the most important factor in successful fumigation?
A. Color of structure
B. Temperature only
C. Gas-tight seal
D. Pest visibility
Answer: C
Rationale: A gas-tight seal ensures fumigant concentration remains
lethal long enough to control pests.
4. Which personal protective equipment is essential when handling
fumigants?
A. Gloves only
B. Sunglasses
C. Respiratory protection (SCBA)
D. Earplugs
Answer: C
Rationale: Self-contained breathing apparatus is required due to
extreme toxicity of fumigants.
5. What is aeration in fumigation?
A. Adding more fumigant
, B. Removing pests manually
C. Ventilating to remove fumigant gas
D. Increasing humidity
Answer: C
Rationale: Aeration is the process of safely ventilating fumigated
areas to remove toxic gases.
6. Which condition improves fumigant effectiveness?
A. Low temperature
B. High pressure
C. Optimal temperature and humidity
D. Darkness
Answer: C
Rationale: Proper temperature and humidity enhance fumigant
volatility and pest exposure.
7. What is a major hazard of fumigants?
A. Odor
B. Toxicity to humans
C. Color change
D. Noise
Answer: B
Rationale: Fumigants are highly toxic and can be fatal if inhaled.
8. Which structure is commonly fumigated?
A. Open fields
, B. Grain silos
C. Parks
D. Lawns
Answer: B
Rationale: Grain silos are enclosed environments ideal for
fumigation.
9. What does a gas-tight tarpaulin help achieve?
A. Pest attraction
B. Fumigant containment
C. Cooling effect
D. Pest growth
Answer: B
Rationale: Tarpaulins prevent fumigant leakage, maintaining lethal
concentration.
10. Which gas is odorless and highly toxic?
A. Oxygen
B. Phosphine
C. Nitrogen
D. Carbon dioxide
Answer: B
Rationale: Phosphine is odorless at lethal concentrations and
extremely toxic.
Pest Control Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of fumigation in pest control?
A. Surface disinfection
B. Use of gases to control pests in enclosed spaces
C. Mechanical removal of pests
D. Biological pest suppression
Answer: B
Rationale: Fumigation uses toxic gases to penetrate enclosed spaces
and eliminate pests in all life stages.
2. Which fumigant is commonly used in grain storage?
A. Chlorine
B. Phosphine
C. Pyrethrin
, D. Boric acid
Answer: B
Rationale: Phosphine gas is widely used for stored grain pest control
due to its deep penetration ability.
3. What is the most important factor in successful fumigation?
A. Color of structure
B. Temperature only
C. Gas-tight seal
D. Pest visibility
Answer: C
Rationale: A gas-tight seal ensures fumigant concentration remains
lethal long enough to control pests.
4. Which personal protective equipment is essential when handling
fumigants?
A. Gloves only
B. Sunglasses
C. Respiratory protection (SCBA)
D. Earplugs
Answer: C
Rationale: Self-contained breathing apparatus is required due to
extreme toxicity of fumigants.
5. What is aeration in fumigation?
A. Adding more fumigant
, B. Removing pests manually
C. Ventilating to remove fumigant gas
D. Increasing humidity
Answer: C
Rationale: Aeration is the process of safely ventilating fumigated
areas to remove toxic gases.
6. Which condition improves fumigant effectiveness?
A. Low temperature
B. High pressure
C. Optimal temperature and humidity
D. Darkness
Answer: C
Rationale: Proper temperature and humidity enhance fumigant
volatility and pest exposure.
7. What is a major hazard of fumigants?
A. Odor
B. Toxicity to humans
C. Color change
D. Noise
Answer: B
Rationale: Fumigants are highly toxic and can be fatal if inhaled.
8. Which structure is commonly fumigated?
A. Open fields
, B. Grain silos
C. Parks
D. Lawns
Answer: B
Rationale: Grain silos are enclosed environments ideal for
fumigation.
9. What does a gas-tight tarpaulin help achieve?
A. Pest attraction
B. Fumigant containment
C. Cooling effect
D. Pest growth
Answer: B
Rationale: Tarpaulins prevent fumigant leakage, maintaining lethal
concentration.
10. Which gas is odorless and highly toxic?
A. Oxygen
B. Phosphine
C. Nitrogen
D. Carbon dioxide
Answer: B
Rationale: Phosphine is odorless at lethal concentrations and
extremely toxic.
