Gas Technician State Gas Fitter Licensing Exam Test Bank Verified Questions Answers 2025/ 2026

Guide: 2026//2027-GAS TECHNICIAN
Latest
– update:GAS
STATE GAS TECHNICIAN
FITTER LICENSING
– STATE
EXAM.pdf
GASGAS
FITTER
TECHNICIAN
LICENSING
–EXAM.pdf
STATE GAS FITTER LICENSING EXAM.pdf




GAS TECHNICIAN – STATE GAS FITTER LICENSING EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2025|2026 Q&A |
INSTANTDOWNLOAD PDF
Q1. What is the minimum test pressure required for a new gas piping installation
before it is placed into service?
A) 1.5 times the proposed operating pressure but not less than 3 psi
B) 5 psi for 10 minutes
C) 100 psi for 24 hours
D) 1 psi for 15 minutes

Correct Answer: A
Rationale: NFPA 54 requires new piping to be tested at not less than 1.5 times
operating pressure and not less than 3 psi, ensuring system integrity before
service.


Q2. Which gas has the highest heating value per cubic foot?
A) Natural gas
B) Propane
C) Butane
D) Methane

Correct Answer: B (Propane)
Rationale: Propane has about 2,500 BTU/ft³ compared to natural gas (~1,000
BTU/ft³).


Q3. What is the primary byproduct of incomplete combustion?
A) Water vapor
B) Carbon dioxide




GAS TECHNICIAN – STATE GAS FITTER
GAS
LICENSING
TECHNICIAN
EXAM.pdf
– STATE GAS FITTER LICENSING
GAS TECHNICIAN
EXAM.pdf
– STATE GAS FITTER LICENSING EXAM

,Guide: 2026//2027-GAS TECHNICIAN
Latest
– update:GAS
STATE GAS TECHNICIAN
FITTER LICENSING
– STATE
EXAM.pdf
GASGAS
FITTER
TECHNICIAN
LICENSING
–EXAM.pdf
STATE GAS FITTER LICENSING EXAM.pdf




C) Nitrogen dioxide
D) Carbon monoxide

Correct Answer: D (Carbon monoxide)
Rationale: Incomplete combustion of hydrocarbons produces carbon monoxide, a
colorless and deadly gas.


1. What is the minimum test pressure for new low-pressure gas piping before
service?
A) 1 psi for 15 minutes
B) 100 psi for 24 hours
C) 1.5 times the proposed operating pressure but not less than 3 psi
D) 5 psi for 10 minutes
Rationale: NFPA 54 requires testing at 1.5 × operating pressure, minimum 3 psi, to
ensure leak integrity.


2. Which gas has the highest heating value per cubic foot?
A) Natural gas
B) Propane
C) Methane
D) Butane
Rationale: Propane yields ~2,500 BTU/ft³ vs. natural gas ~1,000 BTU/ft³.


3. Which byproduct is produced during incomplete combustion?
A) Carbon dioxide
B) Water vapor
C) Carbon monoxide
D) Nitrogen




GAS TECHNICIAN – STATE GAS FITTER
GAS
LICENSING
TECHNICIAN
EXAM.pdf
– STATE GAS FITTER LICENSING
GAS TECHNICIAN
EXAM.pdf
– STATE GAS FITTER LICENSING EXAM

, Guide: 2026//2027-GAS TECHNICIAN
Latest
– update:GAS
STATE GAS TECHNICIAN
FITTER LICENSING
– STATE
EXAM.pdf
GASGAS
FITTER
TECHNICIAN
LICENSING
–EXAM.pdf
STATE GAS FITTER LICENSING EXAM.pdf




Rationale: Incomplete combustion generates CO, a deadly gas hazard.


4. A Category IV appliance requires:
A) Natural draft venting
B) Positive pressure venting with corrosion-resistant materials
C) Type B venting only
D) No venting
Rationale: Category IV appliances use positive pressure and condensing exhaust,
requiring corrosion-resistant venting.


5. Which material is not permitted for interior gas piping?
A) Black steel
B) Copper (where allowed by code)
C) PVC
D) Corrugated stainless steel tubing (CSST)
Rationale: PVC is prohibited due to low temperature and fire resistance.


6. The manifold pressure for most natural gas appliances is:
A) 0.5" w.c.
B) 3.5" w.c.
C) 7" w.c.
D) 11" w.c.
Rationale: Most natural gas appliances operate at ~3.5" water column manifold
pressure.


7. What is the ignition source for a hot surface igniter?




GAS TECHNICIAN – STATE GAS FITTER
GAS
LICENSING
TECHNICIAN
EXAM.pdf
– STATE GAS FITTER LICENSING
GAS TECHNICIAN
EXAM.pdf
– STATE GAS FITTER LICENSING EXAM