NYC NYCHA MAINTENANCE WORKER (PLUMBER)
EXAM QUESTIONS WITH CORRRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of a plumber’s pipe wrench?
A. Cutting pipes
B. Bending pipe
C. Gripping and turning pipes
D. Sealing threaded joints
Rationale: Pipe wrenches are designed to grip and turn
round pipe.
2. Which tool is used to remove the internal burrs after
cutting pipe?
A. Hacksaw
B. Reamer
C. Adjustable wrench
D. Pipe vice
Rationale: A reamer smooths inside edges after cutting.
3. What does PVC stand for?
A. Poly-Vinyl Compound
B. Polyvinyl Chloride
C. Plastic Vinyl Composite
D. Polyvalent Carbon
Rationale: PVC is a common plastic material in piping.
,4. Which of the following is a primary fixture in plumbing?
A. Light switch
B. Gas valve
C. Toilet
D. Electrical outlet
Rationale: A toilet is a major plumbing fixture.
5. What is the purpose of plumber’s tape (Teflon tape)?
A. To decorate pipes
B. To seal threaded connections
C. To insulate wires
D. To clamp hoses
Rationale: Teflon tape helps prevent leaks at threaded
joints.
6. A basin wrench is best used for:
A. Cutting PVC
B. Reaching nuts under a sink
C. Soldering joints
D. Measuring pipe length
Rationale: Basin wrenches reach tight spaces behind sinks.
7. Which material is commonly used for hot and cold water
supply lines?
A. Cast iron
B. Copper
C. PVC DWV
D. Galvanized steel
, Rationale: Copper resists corrosion and handles
temperature.
8. What color is typically used for cold water supply lines?
A. Red
B. Black
C. Blue
D. Green
Rationale: Blue identifies cold water in many systems.
9. What does “DWV” stand for in plumbing?
A. Drain, Waste, Vent
B. Drainage, Waste, Ventilation
C. Direct Water Volume
D. Double Wall Vent
Rationale: DWV is the standard abbreviation for the
system carrying away wastewater and venting gases.
10. A plunger primarily creates:
A. Heat
B. Pressure changes to dislodge clogs
C. Chemical cleaning
D. Permanent pipe repair
Rationale: Plungers use pressure and suction to clear
clogs.
11. What is a key safety precaution when soldering
copper pipe?
A. Use water on joint before soldering
B. Only solder in cold weather
EXAM QUESTIONS WITH CORRRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A
|INSTANT DOWNLOAD PDF
1. What is the primary purpose of a plumber’s pipe wrench?
A. Cutting pipes
B. Bending pipe
C. Gripping and turning pipes
D. Sealing threaded joints
Rationale: Pipe wrenches are designed to grip and turn
round pipe.
2. Which tool is used to remove the internal burrs after
cutting pipe?
A. Hacksaw
B. Reamer
C. Adjustable wrench
D. Pipe vice
Rationale: A reamer smooths inside edges after cutting.
3. What does PVC stand for?
A. Poly-Vinyl Compound
B. Polyvinyl Chloride
C. Plastic Vinyl Composite
D. Polyvalent Carbon
Rationale: PVC is a common plastic material in piping.
,4. Which of the following is a primary fixture in plumbing?
A. Light switch
B. Gas valve
C. Toilet
D. Electrical outlet
Rationale: A toilet is a major plumbing fixture.
5. What is the purpose of plumber’s tape (Teflon tape)?
A. To decorate pipes
B. To seal threaded connections
C. To insulate wires
D. To clamp hoses
Rationale: Teflon tape helps prevent leaks at threaded
joints.
6. A basin wrench is best used for:
A. Cutting PVC
B. Reaching nuts under a sink
C. Soldering joints
D. Measuring pipe length
Rationale: Basin wrenches reach tight spaces behind sinks.
7. Which material is commonly used for hot and cold water
supply lines?
A. Cast iron
B. Copper
C. PVC DWV
D. Galvanized steel
, Rationale: Copper resists corrosion and handles
temperature.
8. What color is typically used for cold water supply lines?
A. Red
B. Black
C. Blue
D. Green
Rationale: Blue identifies cold water in many systems.
9. What does “DWV” stand for in plumbing?
A. Drain, Waste, Vent
B. Drainage, Waste, Ventilation
C. Direct Water Volume
D. Double Wall Vent
Rationale: DWV is the standard abbreviation for the
system carrying away wastewater and venting gases.
10. A plunger primarily creates:
A. Heat
B. Pressure changes to dislodge clogs
C. Chemical cleaning
D. Permanent pipe repair
Rationale: Plungers use pressure and suction to clear
clogs.
11. What is a key safety precaution when soldering
copper pipe?
A. Use water on joint before soldering
B. Only solder in cold weather
