Free Practice Questions for NC Phase F
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Key Facts: NC Phase F Exam
100
Practice Questions
OpenExamPrep
70%
Passing Score
NCDA&CS
1 ppm
Sulfuryl Fluoride Reentry Level
EPA
5 ppm
OSHA PEL (8-hr TWA)
OSHA
$53
Per Phase Exam Attempt
NCDA&CS
Phase F
Fumigation Phase
NC Structural Pest Control Act
North Carolina's Phase F (Fumigation) certification, administered by the NCDA&CS Structural Pest Control & Pesticides Division, authorizes the use of lethal fumigant gases such as sulfuryl fluoride (Vikane) to treat whole structures. The NC Structural Pest Control Act recognizes three phases - P (household pests), W (wood-destroying organisms), and F (fumigation). To certify, candidates complete registered-technician requirements and pass the Core (general standards) exam plus the Phase F category exam, each at 70%; phase exam attempts cost $53. The work centers on tarping and sealing, dosage and half-loss time, the 1 ppm reentry clearance level, SCBA use, DANGER posting, and aeration. This free prep includes 100 research-based practice questions with explanations and an AI tutor.
Sample NC Phase F Practice Questions
Try these sample questions to review concepts for the NC Phase F exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Sulfuryl fluoride (the active ingredient in Vikane) is best described physically as a gas that is:
2Why is chloropicrin introduced into a structure before or with the primary fumigant in many structural fumigations?
3Under federal requirements, a structure fumigated with sulfuryl fluoride may not be reoccupied until the in-air concentration is confirmed at or below:
4Which of the following is the correct OSHA permissible exposure limit (PEL) for sulfuryl fluoride as an 8-hour time-weighted average?
5In North Carolina's structural pest control program, the license phase that covers fumigation is designated:
6A device used at the end of the exposure and aeration period to confirm that the sulfuryl fluoride concentration has dropped to a safe level is called a:
7The instrument commonly used during the exposure period to monitor sulfuryl fluoride concentration and confirm adequate gas accumulation inside the tarped structure is the:
8The half-loss time (HLT) of a structure being fumigated refers to:
9Which combination of factors most directly determines the Vikane (sulfuryl fluoride) dosage for a structural fumigation?
10Sulfuryl fluoride is a relatively poor ovicide. The practical consequence for fumigation is that:
About the NC Phase F Exam
North Carolina's Phase F (Fumigation) certification authorizes structural fumigation - the use of lethal gases such as sulfuryl fluoride (Vikane) to eliminate drywood termites and other pests throughout a structure. Candidates must complete registered-technician requirements, then pass the NCDA&CS Core exam plus the Phase F category exam at 70%.
Exam sponsor: North Carolina Department of Agriculture & Consumer Services (NCDA&CS), Structural Pest Control & Pesticides Division. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Assessment
Core (general standards) examination plus the Phase F (fumigation) category examination, administered by NCDA&CS; 70% required to pass each. This practice bank is 100 selected-response items.
Time Limit
Set at the in-person exam session
Passing Score
70%
Exam / Certification Fees
$53 per phase exam attempt (Core exam taken separately)
Exam sponsor websiteFees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Our practice resources: topics covered
We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.
Fumigants & Gases
Sulfuryl fluoride and methyl bromide properties, chloropicrin warning agent, mode of action, half-life, ovicidal weakness, and the methyl bromide phase-out
Lethal-Gas Safety & Monitoring
Acute inhalation toxicity, 1 ppm reentry vs 5 ppm OSHA PEL, SCBA, two-trained-person rule, Fumiscope monitoring, symptoms and first aid
Structural Fumigation Procedures
Tarping and sealing, secondary locks, volume and dosage calculation, half-loss time and concentration-time, circulation fans, and preparation
Aeration & Clearance
Forced aeration with fans, clearance devices reading 1 ppm in each room's breathing zone, posting clearance, and chloropicrin dissipation
NC Structural Pest Control Act
P/W/F phases, the Committee and NCDA&CS, certified applicator vs registered technician, Core plus phase exams, recordkeeping, CCUs, and prohibited acts
Labeling & Posting
FIFRA label-is-law, DANGER/skull-and-crossbones warning signs at all entrances, fumigant name and 24-hour emergency number, and restricted-use classification
Preparing for the NC Phase F Exam
What You Need to Know
- Passing score: 70%
- Assessment: Core (general standards) examination plus the Phase F (fumigation) category examination, administered by NCDA&CS; 70% required to pass each. This practice bank is 100 selected-response items.
- Time limit: Set at the in-person exam session
- Exam / certification fees: $53 per phase exam attempt (Core exam taken separately) Official sources
Using Our Practice Resources
- Work through all 100 available questions
- Review every answer and explanation
- Track weak areas and revisit them
- Use our AI tutor for tough concepts
NC Phase F: Suggested Study Strategy
Frequently Asked Questions
What is the North Carolina Phase F structural pest control exam?
Phase F is the fumigation phase of North Carolina's structural pest control program. The NC Structural Pest Control Act recognizes three phases - P (household pests), W (wood-destroying organisms), and F (fumigation) - and Phase F authorizes the use of lethal fumigant gases such as sulfuryl fluoride (Vikane) to treat whole structures.
What score do I need to pass the NC Phase F exam?
You need 70% to pass. Certification requires passing both the NCDA&CS Core (general standards) examination and the Phase F (fumigation) category examination. Each phase exam attempt costs $53.
What does the NC Phase F fumigation exam cover?
It covers fumigants and gases (sulfuryl fluoride, methyl bromide, chloropicrin warning agent), lethal-gas safety and monitoring, structural fumigation procedures (tarping, sealing, dosage, half-loss time), aeration and clearance to 1 ppm, the NC Structural Pest Control Act, and labeling and posting.
What is the reentry (clearance) level for sulfuryl fluoride?
A structure fumigated with sulfuryl fluoride may not be reoccupied until a clearance device confirms 1 part per million (ppm) or less in the breathing zone of each room. Note that 5 ppm is the separate OSHA 8-hour worker exposure limit, not the reentry level.
Who administers the NC structural fumigation license?
The Structural Pest Control & Pesticides Division of the North Carolina Department of Agriculture & Consumer Services (NCDA&CS), through the Structural Pest Control Committee, adopts the rules and administers the examinations and licensing for Phase F fumigation.
Is this free NC Phase F practice test comprehensive?
Yes - it includes 100 research-based practice questions across all Phase F content areas with a teaching explanation for every answer, plus a free AI tutor. All content is free forever and updated for 2026.