NYC Master Plumber License Exam Fundamentals
Practice QUESTIONS WITH CORRRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|INSTANT DOWNLOAD PDF
1. Which code governs plumbing work in New York City?
A. IPC
B. UPC
C. NYC Plumbing Code
D. BOCA
Rationale: NYC adopts its own Plumbing Code amended from
national standards.
✅ Correct answer: C. NYC Plumbing Code
2. Who is legally responsible for plumbing work performed
under a permit?
A. Apprentice
B. Journeyman
C. Property owner
D. Licensed Master Plumber
Rationale: The licensed Master Plumber assumes legal
responsibility.
✅ Correct answer: D. Licensed Master Plumber
3. When is a plumbing permit required?
A. Replacing a faucet
B. Clearing a stoppage
C. Installing new piping
,D. Adjusting a valve
Rationale: New installations or alterations require a permit.
✅ Correct answer: C. Installing new piping
4. Which NYC agency enforces plumbing regulations?
A. EPA
B. OSHA
C. DOB
D. DEP
Rationale: The Department of Buildings enforces plumbing
codes.
✅ Correct answer: C. DOB
5. Minimum required PPE when cutting cast iron pipe
includes:
A. Gloves only
B. Safety glasses only
C. Gloves and safety glasses
D. Hard hat only
Rationale: Eye and hand protection are mandatory.
✅ Correct answer: C. Gloves and safety glasses
6. Which is NOT a confined space hazard?
A. Oxygen deficiency
B. Toxic gases
C. Noise exposure
D. Limited entry
Rationale: Noise alone is not considered a confined space
, hazard.
✅ Correct answer: C. Noise exposure
7. Which license allows a plumber to contract work in NYC?
A. Apprentice
B. Journeyman
C. Master Plumber
D. Pipefitter
Rationale: Only Master Plumbers may legally contract.
✅ Correct answer: C. Master Plumber
8. A stop-work order is issued when:
A. Work is delayed
B. Code violations exist
C. Inspection is requested
D. Permit expires
Rationale: Violations trigger enforcement actions.
✅ Correct answer: B. Code violations exist
9. Asbestos is commonly found in:
A. PVC pipe
B. Copper tubing
C. Pipe insulation
D. ABS fittings
Rationale: Older pipes used asbestos in insulation materials.
✅ Correct answer: C. Pipe insulation
10. Class B fire extinguishers are for:
A. Wood
Practice QUESTIONS WITH CORRRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|INSTANT DOWNLOAD PDF
1. Which code governs plumbing work in New York City?
A. IPC
B. UPC
C. NYC Plumbing Code
D. BOCA
Rationale: NYC adopts its own Plumbing Code amended from
national standards.
✅ Correct answer: C. NYC Plumbing Code
2. Who is legally responsible for plumbing work performed
under a permit?
A. Apprentice
B. Journeyman
C. Property owner
D. Licensed Master Plumber
Rationale: The licensed Master Plumber assumes legal
responsibility.
✅ Correct answer: D. Licensed Master Plumber
3. When is a plumbing permit required?
A. Replacing a faucet
B. Clearing a stoppage
C. Installing new piping
,D. Adjusting a valve
Rationale: New installations or alterations require a permit.
✅ Correct answer: C. Installing new piping
4. Which NYC agency enforces plumbing regulations?
A. EPA
B. OSHA
C. DOB
D. DEP
Rationale: The Department of Buildings enforces plumbing
codes.
✅ Correct answer: C. DOB
5. Minimum required PPE when cutting cast iron pipe
includes:
A. Gloves only
B. Safety glasses only
C. Gloves and safety glasses
D. Hard hat only
Rationale: Eye and hand protection are mandatory.
✅ Correct answer: C. Gloves and safety glasses
6. Which is NOT a confined space hazard?
A. Oxygen deficiency
B. Toxic gases
C. Noise exposure
D. Limited entry
Rationale: Noise alone is not considered a confined space
, hazard.
✅ Correct answer: C. Noise exposure
7. Which license allows a plumber to contract work in NYC?
A. Apprentice
B. Journeyman
C. Master Plumber
D. Pipefitter
Rationale: Only Master Plumbers may legally contract.
✅ Correct answer: C. Master Plumber
8. A stop-work order is issued when:
A. Work is delayed
B. Code violations exist
C. Inspection is requested
D. Permit expires
Rationale: Violations trigger enforcement actions.
✅ Correct answer: B. Code violations exist
9. Asbestos is commonly found in:
A. PVC pipe
B. Copper tubing
C. Pipe insulation
D. ABS fittings
Rationale: Older pipes used asbestos in insulation materials.
✅ Correct answer: C. Pipe insulation
10. Class B fire extinguishers are for:
A. Wood
