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100+ Free Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) Practice Questions

Punjab School Education Board (PSEB) Matric Class 10 NSQF Plumbing (Code 91) — Job Role: Assistant Plumber (General) practice questions are available now; exam metadata is being verified.

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Overall Matric pass percentages are published with each PSEB result cycle; no fixed standing subject-wise Plumbing (91) pass-rate figure is used here. Pass Rate
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2026 Statistics

Key Facts: Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) Exam

Code 91

PSEB Matric NSQF Plumbing trade code

PSEB Scheme of Studies Class X (2026-27)

40 + 50 + 10

Theory + Practical + INA marks

PSEB Scheme of Studies — Plumbing (91) Assistant Plumber (General)

10 + 30

Employability + Vocational theory marks

PSEB Class 10 Plumbing (NSQF) Syllabus 2026-27

33%

Minimum separately in Theory, Practical, INA and in aggregate

PSEB Scheme of Studies Class X pass rule

Assistant Plumber (General)

Official job role title for trade 91

PSEB Plumbing NSQF syllabus / scheme job-role listing

English MCQ adaptation

This free local bank is not the official paper or practical certificate

OpenExamPrep practice policy

PSEB Matric NSQF Plumbing (91) Assistant Plumber (General): Theory 40 + Practical 50 + INA 10 = 100; pass 33% separately and aggregate. Theory units cover employability plus pipes, fixtures, building basics, safety, and resource use. Free 2026 English MCQ bank is a study aid—not the official mixed paper or practical cert.

Sample Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) Practice Questions

Try these sample questions to test your Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which plastic pipe is most commonly chosen for cold potable water distribution in modern Indian domestic plumbing because it is light, corrosion-resistant, and solvent-cemented?
A.uPVC or PVC water-supply pipe
B.Unglazed clay pipe for indoor cold water
C.Lead pipe for all potable branches
D.Cast iron soil pipe as the default cold-water main
Explanation: uPVC/PVC water-supply pipes are widely used for cold potable distribution in Class 10 NSQF plumbing training: they resist corrosion, are lightweight, and join with solvent cement or push-fit fittings.
2CPVC pipe is preferred over ordinary PVC for which domestic application?
A.Natural-gas distribution mains
B.Hot-water supply lines that must tolerate higher temperature
C.Underground storm-water drains only
D.Electrical conduit as a potable water substitute
Explanation: CPVC (chlorinated PVC) has a higher temperature rating than ordinary PVC, so it is used for hot-water supply within manufacturer limits.
3Galvanized iron (GI) pipe is coated with zinc mainly to:
A.Make the pipe transparent for inspection
B.Increase electrical conductivity for bonding
C.Reduce rusting of the steel base metal
D.Eliminate the need for any joint sealant forever
Explanation: Zinc galvanizing is a sacrificial/barrier coating that slows corrosion of the iron/steel pipe in water and moist air.
4Before solvent-cementing a PVC socket joint, the assistant plumber should first:
A.Thread both ends with a pipe die
B.Heat the pipe red-hot with a torch
C.Apply cement without cleaning to save time
D.Cut square, deburr, clean, and dry-fit the pipe and fitting
Explanation: Correct solvent-cement sequence: measure and cut square, remove burrs, clean mating surfaces, dry-fit, then apply primer (if specified) and cement and assemble fully.
5PTFE (Teflon) tape on a male pipe thread is wrapped:
A.In the same direction the male thread will screw into the female fitting so the tape does not unwind
B.On the outside of the fitting hex only
C.Only after the joint is fully tightened
D.Against the tightening direction so it packs thicker
Explanation: Tape is wrapped clockwise (as viewed looking at the pipe end) so tightening the joint tightens rather than unravels the tape.
6A pipe fitting that connects two pipes of equal diameter in a straight line is called a:
A.Tee
B.Coupling (or socket)
C.Elbow
D.Reducer
Explanation: A coupling/socket joins two collinear pipes of the same size; elbows change direction, tees branch, reducers change size.
7Which fitting is used to join two different pipe diameters in line?
A.Equal tee only
B.Union only
C.Reducer (or reducing coupling)
D.Plug only
Explanation: A reducer (concentric or eccentric as specified) transitions between two pipe sizes on a straight run.
8A union fitting is most useful when the plumber needs to:
A.Convert potable water into sewage
B.Increase pressure permanently beyond design
C.Replace every elbow with a tee
D.Disconnect a section of pipe later without cutting the pipe
Explanation: Unions provide a mechanical joint that can be opened for maintenance or equipment removal without destroying the pipe run.
9When cutting GI pipe with a hacksaw for threading, the cut should be:
A.Square to the pipe axis so the die starts true
B.Jagged to help the die bite
C.At a steep 45° angle to save metal
D.Left with a large internal burr for strength
Explanation: A square cut lets the die engage evenly; burrs must be reamed/filed so they do not restrict flow or damage threads.
10Pipe dies and stocks are used to:
A.Prime a centrifugal pump
B.Cut external male threads on metal pipe ends
C.Measure water hardness
D.Solvent-weld PVC sockets
Explanation: A die stock with the correct size dies cuts external threads on steel/GI pipe for screwed joints.

About the Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) Practice Questions

Verified exam format metadata for Punjab School Education Board (PSEB) Matric Class 10 NSQF Plumbing (Code 91) — Job Role: Assistant Plumber (General) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.