Minnesota Category J Fumigation Pest Control
Examination questions and Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1.
Which gas is most commonly used in structural fumigation?
A. Chlorine
B. Sulfur dioxide
C. Phosphine
D. Ammonia
Answer: C
Phosphine is widely used due to its effectiveness against stored product
pests.
2.
Fumigation primarily controls pests in what life stage?
A. Egg only
B. Larvae only
C. All life stages
D. Adult only
Answer: C
Fumigants penetrate materials and can kill all pest life stages.
3.
,A fumigant is best defined as a pesticide that:
A. Is sprayed on surfaces
B. Works only on contact
C. Acts as a gas to penetrate areas
D. Is applied to soil only
Answer: C
Fumigants are gases that penetrate cracks, crevices, and commodities.
4.
Which is a key hazard of fumigants?
A. Low cost
B. High odor
C. Extreme toxicity to humans
D. Fast degradation
Answer: C
Fumigants are highly toxic and require strict safety measures.
5.
Before fumigation, the most important step is:
A. Spraying insecticide
B. Sealing the structure
C. Increasing humidity
D. Cooling the building
Answer: B
Proper sealing ensures gas concentration is maintained.
6.
,Phosphine gas is typically generated from:
A. Chlorinated water
B. Aluminum phosphide
C. Sulfur dust
D. Liquid ammonia
Answer: B
Aluminum phosphide reacts with moisture to release phosphine gas.
7.
Which pest is commonly targeted in grain fumigation?
A. Termites
B. Bed bugs
C. Weevils
D. Mosquitoes
Answer: C
Weevils are common stored grain pests.
8.
Fumigation is most effective in:
A. Open windy fields
B. Completely sealed spaces
C. Wet soil only
D. Water bodies
Answer: B
Gas must be contained for effectiveness.
9.
, Exposure to phosphine gas can result in:
A. Skin whitening
B. Respiratory failure
C. Improved breathing
D. Increased appetite
Answer: B
Phosphine is highly toxic to the respiratory system.
10.
What is required before re-entering a fumigated structure?
A. Cooling period
B. Aeration and gas monitoring
C. Spraying water
D. Painting surfaces
Answer: B
Gas levels must be reduced to safe thresholds.
11.
The term “aeration” means:
A. Heating the area
B. Removing fumigant gas
C. Adding oxygen
D. Sealing cracks
Answer: B
It refers to ventilating and clearing toxic gases.
12.
Examination questions and Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1.
Which gas is most commonly used in structural fumigation?
A. Chlorine
B. Sulfur dioxide
C. Phosphine
D. Ammonia
Answer: C
Phosphine is widely used due to its effectiveness against stored product
pests.
2.
Fumigation primarily controls pests in what life stage?
A. Egg only
B. Larvae only
C. All life stages
D. Adult only
Answer: C
Fumigants penetrate materials and can kill all pest life stages.
3.
,A fumigant is best defined as a pesticide that:
A. Is sprayed on surfaces
B. Works only on contact
C. Acts as a gas to penetrate areas
D. Is applied to soil only
Answer: C
Fumigants are gases that penetrate cracks, crevices, and commodities.
4.
Which is a key hazard of fumigants?
A. Low cost
B. High odor
C. Extreme toxicity to humans
D. Fast degradation
Answer: C
Fumigants are highly toxic and require strict safety measures.
5.
Before fumigation, the most important step is:
A. Spraying insecticide
B. Sealing the structure
C. Increasing humidity
D. Cooling the building
Answer: B
Proper sealing ensures gas concentration is maintained.
6.
,Phosphine gas is typically generated from:
A. Chlorinated water
B. Aluminum phosphide
C. Sulfur dust
D. Liquid ammonia
Answer: B
Aluminum phosphide reacts with moisture to release phosphine gas.
7.
Which pest is commonly targeted in grain fumigation?
A. Termites
B. Bed bugs
C. Weevils
D. Mosquitoes
Answer: C
Weevils are common stored grain pests.
8.
Fumigation is most effective in:
A. Open windy fields
B. Completely sealed spaces
C. Wet soil only
D. Water bodies
Answer: B
Gas must be contained for effectiveness.
9.
, Exposure to phosphine gas can result in:
A. Skin whitening
B. Respiratory failure
C. Improved breathing
D. Increased appetite
Answer: B
Phosphine is highly toxic to the respiratory system.
10.
What is required before re-entering a fumigated structure?
A. Cooling period
B. Aeration and gas monitoring
C. Spraying water
D. Painting surfaces
Answer: B
Gas levels must be reduced to safe thresholds.
11.
The term “aeration” means:
A. Heating the area
B. Removing fumigant gas
C. Adding oxygen
D. Sealing cracks
Answer: B
It refers to ventilating and clearing toxic gases.
12.
