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

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Exam pass rate: Overall Matric pass percentages are published with each PSEB result cycle; no fixed standing subject-wise Plumbing (91) pass-rate figure is used here.
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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 review concepts for the Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) exam. 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) Exam

PSEB Matric NSQF Plumbing (subject code 91) is the Class 10 skill subject for the job role Assistant Plumber (General). Under the official Scheme of Studies, marks are Theory 40 + Practical 50 + Internal Assessment (INA) 10 (grand total 100). The 2026–27 syllabus divides theory into Employability Skills (10 marks) and Vocational Skills (30 marks) covering basic building construction; pipes (cutting, threading, joining, testing); plumbing and sanitary fixtures; healthy/safe/secure work environment; and optimum utilization of resources. Candidates must obtain at least 33% separately in Theory, Practical, and INA, and 33% in aggregate. NSQF question papers are provided by the Board while evaluation of NSQF subjects is at school level; practicals are school-conducted. This free bank offers 100 English four-option MCQs as a study adaptation for concept drills—pair it with workshop practice and official materials on pseb.ac.in.

Exam sponsor: Punjab School Education Board (PSEB). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Official (Scheme of Studies Class X): Theory 40 + Practical 50 + Internal Assessment (INA) 10 = 100. Theory (PSEB Class 10 Plumbing NSQF syllabus 2026-27): Part A Employability Skills 10 marks (Communication, Self-management, ICT, Entrepreneurial, Green Skills — II); Part B Vocational Skills 30 marks (Basic Building Construction; Pipes—Cutting, Threading, Joining and Testing; Plumbing and Sanitary Fixtures; Maintaining Healthy, Safe and Secure Work Environment; Optimum Utilization of Resources). Job role: Assistant Plumber (General). Industry QP reference: PSC/Q0102 (support activities, tools, H&S, teamwork, resource optimization). Local bank: English MCQ study adaptation only.

Time Limit

As notified on the year’s PSEB Matric timetable for the NSQF theory paper; practical/INA scheduled by the school

Passing Score

33% separately in Theory, Practical, and INA, and 33% in aggregate (PSEB Scheme of Studies Class X — confirm current circular)

Exam / Certification Fees

As per the annual PSEB Matric examination fee notification (confirm current circular on pseb.ac.in).

Exam sponsor website

Reported exam pass rate: Overall Matric pass percentages are published with each PSEB result cycle; no fixed standing subject-wise Plumbing (91) pass-rate figure is used here.. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, 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.

~22% of this local bank

Pipes — Cutting, Threading, Joining and Testing

Materials, cutting, threading, fittings, jointing, supports, and leak/pressure testing (Part B Unit 2).

~15% of this local bank

Plumbing and Sanitary Fixtures

Basins, WC, urinals, traps, floor traps, soil/waste ideas, and fixture support tasks (Part B Unit 3).

~15% of this local bank

Water Supply Basics

Potable supply, valves, tanks, isolation, pressure, and cross-connection awareness.

~12% of this local bank

Tools and Equipment

Hand/power tools, care, rust treatment, and safe storage.

~15% of this local bank

Healthy, Safe and Secure Work Environment

PPE, trenches, electrical/solvent hazards, hygiene, first aid awareness, and reporting (Part B Unit 4).

~8% of this local bank

Basic Building Construction

Foundations, chases, sleeves, wet areas, fixings, and service sequence (Part B Unit 1).

~8% of this local bank

Measurements and Layout

SI units, tape reading, cut lengths, gradients, and simple sketches.

~5% of this local bank

Employability Skills and Resource Utilization

Communication, self-management, ICT, entrepreneurship, green skills, and waste/water conservation (Part A + Unit 5).

Preparing for the Punjab PSEB Matric NSQF Plumbing (Assistant Plumber) Exam

What You Need to Know

  • Passing score: 33% separately in Theory, Practical, and INA, and 33% in aggregate (PSEB Scheme of Studies Class X — confirm current circular)
  • Assessment: Official (Scheme of Studies Class X): Theory 40 + Practical 50 + Internal Assessment (INA) 10 = 100. Theory (PSEB Class 10 Plumbing NSQF syllabus 2026-27): Part A Employability Skills 10 marks (Communication, Self-management, ICT, Entrepreneurial, Green Skills — II); Part B Vocational Skills 30 marks (Basic Building Construction; Pipes—Cutting, Threading, Joining and Testing; Plumbing and Sanitary Fixtures; Maintaining Healthy, Safe and Secure Work Environment; Optimum Utilization of Resources). Job role: Assistant Plumber (General). Industry QP reference: PSC/Q0102 (support activities, tools, H&S, teamwork, resource optimization). Local bank: English MCQ study adaptation only.
  • Time limit: As notified on the year’s PSEB Matric timetable for the NSQF theory paper; practical/INA scheduled by the school
  • Exam / certification fees: As per the annual PSEB Matric examination fee notification (confirm current circular on pseb.ac.in). 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

Punjab PSEB Matric NSQF Plumbing (Assistant Plumber): Suggested Study Strategy

1Learn GI vs PVC/uPVC vs CPVC uses first—many theory questions start from material selection and temperature limits.
2Memorize trap purpose (water seal), common fixtures, and why floor traps and gullies exist.
3Match tools to jobs: pipe wrench, die stock, hacksaw, spirit level, plumb bob, measuring tape, pipe vice.
4Practise joint safety: square cut, deburr, correct sealant/solvent sequence, support pipes, and pressure-test before concealment.
5Link employability units to workshop scenarios: clear communication, PPE, water conservation, and simple digital notes.
6Alternate MCQ drills with short written answers so you can explain systems for Board-style theory marks.

Frequently Asked Questions

What is the official marks split for PSEB Matric NSQF Plumbing (91)?

Under the PSEB Scheme of Studies for Class X, Plumbing (91) Assistant Plumber (General) is Theory 40 + Practical 50 + Internal Assessment (INA) 10 = 100 marks. Theory is further split in the 2026–27 syllabus into Employability Skills (10) and Vocational Skills (30).

Is the official PSEB Plumbing exam pure multiple-choice?

No. Official theory is a Board-set written paper for the NSQF skill subject, plus separate school practical and INA. This page’s 100 English MCQs are a study adaptation for knowledge drills—not a full simulation of the official written paper or practical certification assessment.

What is the passing score?

PSEB requires at least 33% marks separately in Theory, Practical, and INA, as well as 33% in aggregate. Always confirm the current Scheme of Studies / result circular on pseb.ac.in.

Which units are in the Class 10 Plumbing vocational theory?

Part B Vocational Skills (30 marks): Basic Building Construction; Pipes—Cutting, Threading, Joining and Testing of Pipelines; Plumbing and Sanitary Fixtures; Maintaining Healthy, Safe and Secure Work Environment; Optimum Utilization of Resources. Part A adds five employability units (10 marks).

What job role does code 91 map to?

Assistant Plumber (General)—supporting installation and repair of plumbing fittings and fixtures (industry QP family PSC/Q0102). School curriculum and assessment remain under PSEB rules.

How should I use this free MCQ bank?

Drill concepts daily in small sets, review every wrong option explanation, then practise workshop skills, short written answers, and INA/portfolio tasks required by your school. MCQs alone do not replace practical competence.