OKLAHOMA CATEGORY 12 FUMIGATION PEST
CONTROL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFED ANSWERS) Q&A
2027|INSTANT FOWNLOAD PDF
1.
Which gas is most commonly used in structural fumigation?
A. Chlorine
B. Phosphine
C. Oxygen
D. Nitrogen
Rationale: Phosphine is widely used due to effectiveness
against stored product pests.
Correct Answer: B. Phosphine
2.
Fumigation primarily controls pests by:
A. Contact toxicity
B. Ingestion only
C. Respiratory action in enclosed spaces
D. Repellency
Rationale: Fumigants act as gases penetrating pest respiratory
systems.
Correct Answer: C. Respiratory action in enclosed spaces
,3.
A fumigant must be:
A. Solid
B. Liquid only
C. Gas at application temperature
D. Insoluble in water
Rationale: Effective fumigants must volatilize into gas form.
Correct Answer: C. Gas at application temperature
4.
Which is a major safety requirement before fumigation?
A. Increase humidity
B. Evacuate all humans and animals
C. Add food materials
D. Open all doors permanently
Rationale: Fumigation areas must be completely vacated.
Correct Answer: B. Evacuate all humans and animals
5.
Phosphine gas is produced from:
A. Sodium chloride
B. Aluminum phosphide
C. Calcium carbonate
,D. Sulfur
Rationale: Aluminum phosphide releases phosphine on contact
with moisture.
Correct Answer: B. Aluminum phosphide
6.
Fumigation is most effective against pests in:
A. Open fields
B. Water bodies
C. Sealed structures
D. Moving air
Rationale: Gas must be contained for effectiveness.
Correct Answer: C. Sealed structures
7.
A key property of fumigants is:
A. Low volatility
B. High penetration ability
C. High viscosity
D. Low toxicity only
Rationale: Fumigants must penetrate materials and pest hiding
places.
Correct Answer: B. High penetration ability
, 8.
Which PPE is essential during fumigation?
A. Sandals
B. Respirator
C. Sunglasses
D. Gloves only
Rationale: Respiratory protection is critical against toxic gases.
Correct Answer: B. Respirator
9.
Gas-tight sealing before fumigation is called:
A. Calibration
B. Tarpauling
C. Sealing or containment
D. Aeration
Rationale: Structures must be sealed to prevent gas leakage.
Correct Answer: C. Sealing or containment
10.
The process of removing fumigant gas after treatment is:
A. Injection
B. Aeration
C. Evaporation
D. Condensation
CONTROL EXAM QUESTIONS AND CORRECT
ANSWERS (VERIFED ANSWERS) Q&A
2027|INSTANT FOWNLOAD PDF
1.
Which gas is most commonly used in structural fumigation?
A. Chlorine
B. Phosphine
C. Oxygen
D. Nitrogen
Rationale: Phosphine is widely used due to effectiveness
against stored product pests.
Correct Answer: B. Phosphine
2.
Fumigation primarily controls pests by:
A. Contact toxicity
B. Ingestion only
C. Respiratory action in enclosed spaces
D. Repellency
Rationale: Fumigants act as gases penetrating pest respiratory
systems.
Correct Answer: C. Respiratory action in enclosed spaces
,3.
A fumigant must be:
A. Solid
B. Liquid only
C. Gas at application temperature
D. Insoluble in water
Rationale: Effective fumigants must volatilize into gas form.
Correct Answer: C. Gas at application temperature
4.
Which is a major safety requirement before fumigation?
A. Increase humidity
B. Evacuate all humans and animals
C. Add food materials
D. Open all doors permanently
Rationale: Fumigation areas must be completely vacated.
Correct Answer: B. Evacuate all humans and animals
5.
Phosphine gas is produced from:
A. Sodium chloride
B. Aluminum phosphide
C. Calcium carbonate
,D. Sulfur
Rationale: Aluminum phosphide releases phosphine on contact
with moisture.
Correct Answer: B. Aluminum phosphide
6.
Fumigation is most effective against pests in:
A. Open fields
B. Water bodies
C. Sealed structures
D. Moving air
Rationale: Gas must be contained for effectiveness.
Correct Answer: C. Sealed structures
7.
A key property of fumigants is:
A. Low volatility
B. High penetration ability
C. High viscosity
D. Low toxicity only
Rationale: Fumigants must penetrate materials and pest hiding
places.
Correct Answer: B. High penetration ability
, 8.
Which PPE is essential during fumigation?
A. Sandals
B. Respirator
C. Sunglasses
D. Gloves only
Rationale: Respiratory protection is critical against toxic gases.
Correct Answer: B. Respirator
9.
Gas-tight sealing before fumigation is called:
A. Calibration
B. Tarpauling
C. Sealing or containment
D. Aeration
Rationale: Structures must be sealed to prevent gas leakage.
Correct Answer: C. Sealing or containment
10.
The process of removing fumigant gas after treatment is:
A. Injection
B. Aeration
C. Evaporation
D. Condensation
