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CA BRANCH 1 OPERATOR EXAM SPCB Manuals Practice Test | 2026
Guide Questions with Answers & Rationales
Question 1
Which license branch in California permits the use of fumigants
for structural pest control?
A. Branch 1
B. Branch 2
C. Branch 3
D. Branch 4
Answer: A
Rationale: Branch 1 is the Fumigation license, allowing the use
of lethal gases to control pests in structures.
Question 2
Which of the following is a commonly used structural fumigant
in California?
A. Boric acid
B. Sulfuryl fluoride (Vikane)
C. Diatomaceous earth
D. Pyrethrum
Answer: B
Rationale: Sulfuryl fluoride is widely used for structural
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fumigation of drywood termites and other pests. Methyl
bromide is also used but restricted.
Question 3
Which fumigant is an odorless, colorless gas that requires the
addition of a warning agent such as chloropicrin?
A. Sulfuryl fluoride
B. Methyl bromide
C. Carbon dioxide
D. Nitrogen
Answer: A
Rationale: Sulfuryl fluoride is odorless and colorless;
chloropicrin is often added as a warning agent to alert
occupants.
Question 4
Which of the following is a primary safety concern when
performing structural fumigation?
A. Pesticide resistance only
B. Inhalation toxicity and explosion/fire hazard
C. Soil compaction
D. Noise pollution
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Answer: B
Rationale: Fumigants are highly toxic gases and may be
flammable/explosive under certain conditions; safety
monitoring and clearance are critical.
Question 5
What is the purpose of "aeration" after fumigation?
A. To increase fumigant concentration
B. To remove fumigant gas from the structure to safe levels
C. To seal the structure more tightly
D. To apply a second fumigant
Answer: B
Rationale: Aeration ventilates the structure to reduce fumigant
concentration to safe reentry levels.
Question 6
Which instrument is used to measure fumigant concentration in
the air?
A. pH meter
B. Gas detector / fumigant monitoring device
C. Thermometer only
D. Hygrometer
CA BRANCH 1 OPERATOR EXAM SPCB Manuals Practice Test | 2026
Guide Questions with Answers & Rationales
Question 1
Which license branch in California permits the use of fumigants
for structural pest control?
A. Branch 1
B. Branch 2
C. Branch 3
D. Branch 4
Answer: A
Rationale: Branch 1 is the Fumigation license, allowing the use
of lethal gases to control pests in structures.
Question 2
Which of the following is a commonly used structural fumigant
in California?
A. Boric acid
B. Sulfuryl fluoride (Vikane)
C. Diatomaceous earth
D. Pyrethrum
Answer: B
Rationale: Sulfuryl fluoride is widely used for structural
, Page |2
fumigation of drywood termites and other pests. Methyl
bromide is also used but restricted.
Question 3
Which fumigant is an odorless, colorless gas that requires the
addition of a warning agent such as chloropicrin?
A. Sulfuryl fluoride
B. Methyl bromide
C. Carbon dioxide
D. Nitrogen
Answer: A
Rationale: Sulfuryl fluoride is odorless and colorless;
chloropicrin is often added as a warning agent to alert
occupants.
Question 4
Which of the following is a primary safety concern when
performing structural fumigation?
A. Pesticide resistance only
B. Inhalation toxicity and explosion/fire hazard
C. Soil compaction
D. Noise pollution
, Page |3
Answer: B
Rationale: Fumigants are highly toxic gases and may be
flammable/explosive under certain conditions; safety
monitoring and clearance are critical.
Question 5
What is the purpose of "aeration" after fumigation?
A. To increase fumigant concentration
B. To remove fumigant gas from the structure to safe levels
C. To seal the structure more tightly
D. To apply a second fumigant
Answer: B
Rationale: Aeration ventilates the structure to reduce fumigant
concentration to safe reentry levels.
Question 6
Which instrument is used to measure fumigant concentration in
the air?
A. pH meter
B. Gas detector / fumigant monitoring device
C. Thermometer only
D. Hygrometer
