100+ Free CTVET Ghana Certificate II — Plumbing Practice Questions

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2026 Statistics

Key Facts: CTVET Ghana Certificate II — Plumbing Exam

50%

Passing Mark (Grade C6)

CTVET Grading Scale

2 Hours

Theory Exam Duration

CTVET Syllabus

100

Practice Questions

Study Bank

Act 328

Ghana Safety Act

Factories Act, 1970

The CTVET Ghana Certificate II in Plumbing is the national qualification for professional plumbers and pipefitters in Ghana. The certification includes a 2-hour theory paper and a hands-on practical skills exam testing pipe joints, water supply, drainage, and safety. A Grade C6 (50%+) is required to pass. This study bank provides 100 comprehensive questions aligned to the official syllabus.

Sample CTVET Ghana Certificate II — Plumbing Practice Questions

Try these sample questions to test your CTVET Ghana Certificate II — Plumbing exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under Section 39 of the Ghana Factories, Offices and Shops Act, 1970 (Act 328), which of the following is mandatory in a plumbing workshop where welding or soldering is performed?

A.Adequate ventilation to remove toxic fumes and gases from the breathing zone

B.Air conditioning units running at a maximum temperature of 18 degrees Celsius

C.A dry chemical fire extinguisher placed every three meters along the wall

D.Soundproof insulation on all walls to reduce noise below 30 decibels

Explanation: Act 328 requires proper ventilation in factories and workshops to prevent the accumulation of dust, fumes, or impurities that could be injurious to workers' health. In plumbing, welding and soldering produce lead and flux fumes that must be removed by exhaust ventilation.

2What is the minimum personal protective equipment (PPE) required when using a blowtorch to solder a copper joint?

A.Safety glasses, heat-resistant leather gloves, and cotton clothing

B.Face shield, rubber chemical gloves, and a synthetic nylon apron

C.Dust mask, latex gloves, and steel-toe boots only

D.Oxy-acetylene goggles, welding leather sleeves, and a respirator

Explanation: Soldering copper joints with a blowtorch requires safety glasses to protect the eyes from flux splatter, heat-resistant leather gloves to prevent burns from hot solder or copper, and cotton clothing (synthetic fibers can melt onto the skin).

3How should empty PVC primer and solvent cement cans be disposed of on a Ghanaian construction site?

A.Collected and disposed of at a designated hazardous waste collection point

B.Burned in an open fire pit on site to consume any remaining liquid residue

C.Crushed and buried directly in the soil next to the plumbing trenches

D.Rinsed with municipal water and disposed of with general organic waste

Explanation: PVC solvent cements and primers contain highly flammable volatile organic compounds (VOCs) and hazardous chemical agents. They must be collected and treated as hazardous waste at designated collection points rather than burned, buried, or mixed with organic waste.

4A fire breaks out in a plumbing store containing solvent cement, polyurethane sealants, and cleaning solvents. Which class of fire is this, and which extinguisher is appropriate?

A.Class B fire; dry chemical powder or carbon dioxide (CO2) extinguisher

B.Class A fire; pressurized water fire extinguisher

C.Class C fire; wet chemical fire extinguisher

D.Class D fire; metal powder dry agent extinguisher

Explanation: Fires involving flammable liquids like solvent cement and sealants are classified as Class B fires. Pressurized water must never be used on liquid fires because it spreads the fuel; instead, use dry chemical powder or CO2 to smother the flames.

5When cutting a galvanized iron (GI) pipe using an angle grinder, which safety hazard is most critical to control?

A.High-velocity metal sparks and flying fragments of the grinding disc

B.Static electricity buildup on the pipe surface causing electrical shock

C.A sudden loss of hydraulic pressure in the grinder tool handle

D.Toxic gas emissions from the internal lead lining of the iron pipe

Explanation: Cutting GI pipe with an angle grinder generates high-speed sparks and carries a risk of disc breakage. Full eye protection (safety goggles or face shield) and grinding guards are essential to prevent ocular injuries.

6What is the correct immediate first-aid action for a thermal burn caused by skin contact with hot solder?

A.Cool the burn area under clean, running cold water for at least 10 to 20 minutes

B.Apply heavy grease, engine oil, or butter to seal the burn from the air

C.Pop any blisters that form immediately to drain the fluid and reduce pressure

D.Wrap the burn tightly with a dry wool cloth or adhesive medical tape

Explanation: Immediate cooling with clean, running cold water for 10-20 minutes is the gold standard for minor burns. It stops the burning process, reduces swelling, and relieves pain. Never apply grease or butter, which traps heat, and do not pop blisters as it increases infection risk.

7When placing a straight extension ladder against a wall to access gutter piping, what is the correct safety angle ratio (4:1 rule)?

A.The base of the ladder should be 1 meter away from the wall for every 4 meters of vertical height

B.The base of the ladder should be 4 meters away from the wall for every 1 meter of vertical height

C.The ladder should be positioned at a 45-degree angle relative to the flat ground

D.The top of the ladder must extend exactly 4 feet above the roof support line

Explanation: The 4:1 ladder safety rule (or 75-degree angle) states that for every four units of vertical height, the base of the ladder should be placed one unit away from the wall. This ensures stability and prevents the ladder from sliding out or tipping backward.

8What health risk is associated with overheating or burning PVC pipes while heat-bending or joining them?

A.Inhalation of hydrogen chloride gas, which forms corrosive hydrochloric acid in the lungs

B.Absorption of nitrogen gas through the skin causing joint decompression sickness

C.Inhalation of pure carbon monoxide which turns into carbon dioxide inside the blood

D.Inhalation of silica dust which causes immediate permanent lung fibrosis

Explanation: Overheating PVC plastic releases hydrogen chloride (HCl) gas. When inhaled, HCl gas mixes with moisture in the respiratory tract to form hydrochloric acid, causing severe irritation, chemical burns, and respiratory distress.

9If PVC solvent cement splatters into a plumber's eyes during joint assembly, what is the critical first-aid action?

A.Flush the eyes immediately with clean water for at least 15 minutes and seek medical attention

B.Apply a mild vinegar solution to neutralize the alkaline solvents in the cement

C.Rub the eye vigorously with a clean cotton cloth to scrape off the setting glue

D.Instill oily eye drops or mineral oil to dissolve the adhesive compounds

Explanation: Chemical splashes in the eyes require immediate, continuous irrigation with clean, lukewarm water for at least 15 minutes to dilute and wash away the solvent. The casualty should then seek medical attention. Never rub the eye or apply neutralizing acids/bases.

10When digging a trench to install an underground drainage pipe in sandy clay soil, at what depth must shoring or trench bracing be installed to prevent cave-ins?

A.1.5 meters (5 feet) or deeper

B.0.5 meters (1.6 feet) or deeper

C.3.0 meters (10 feet) or deeper

D.Only when groundwater begins to seep into the excavation

Explanation: Generally, excavations and trenches that are 1.5 meters (5 feet) or deeper require shoring, sloping, or shielding systems to protect workers from soil cave-ins, which can occur suddenly and lead to suffocation.

About the CTVET Ghana Certificate II — Plumbing Exam

The CTVET Ghana Certificate II in Plumbing certification validates the core theoretical knowledge and practical competence of candidates in plumbing systems, water supply layout, drainage installation, and workshop safety. The curriculum covers safety standards (under the Ghana Factories, Offices and Shops Act, 1970 - Act 328), tool care and maintenance, identification and selection of pipe materials (copper, PVC, PPR, HDPE, GI), pipe joining methods (socket heat fusion, solvent welding, threading, compression), water supply distribution (elevated polytanks, booster pumps, solar heaters, valves), drainage, waste, and vent (DWV) systems (septic tanks, soakaway aggregates, trap seals, stack venting), and blueprint reading and troubleshooting. The examination includes a 2-hour theory paper (combining objectives and essays) and a hands-on practical exam.

Questions

50 scored questions

Time Limit

2 hours

Passing Score

Grade C6 (50% or above) on the CTVET grading scale

Exam Fee

GHS 300 - GHS 800 (varies by center) (Commission for Technical and Vocational Education and Training (CTVET), Ghana)

CTVET Ghana Certificate II — Plumbing Exam Content Outline

15%

Workshop Safety & Health

Ghana Factories Act, 1970 (Act 328) compliance, workshop organization, first aid protocols, personal protective equipment (safety goggles for soldering, particulate masks for grinding), handling chemical solvents (PVC cement, primers), fire safety (Class B solvent fires), and trench safety (shoring at 1.5m depth).

10%

Tools & Equipment Maintenance

Selection, safety, and maintenance of plumbing hand tools (Stillson wrenches, basin wrenches, strap wrenches, tubing cutters, threaders, benders) and power equipment (grinders, power threaders, PPR fusion irons). Hand tool care, reaming/deburring, and pressure testing equipment.

25%

Plumbing Materials & Pipe Joining

Properties and installation of piping materials (copper Type K/L/M, PVC, PPR, HDPE, Galvanized Iron - GI). Joint assembly techniques (soldering, solvent welding, socket heat fusion, compression fittings, thread cutting, dielectric unions), curing times, thermal expansion offsets, and corrosion prevention.

25%

Water Supply Systems

Gravity-fed water systems, elevated platform sizing and weight loads for water polytanks, booster pump suction and discharge check valves, float valve regulation, TPRV setting on geyser heaters (150 psi / 99°C), backflow prevention (air gaps, vacuum breakers), water hammer resolution, and solar water heater collector orientation in Ghana.

15%

Drainage, Waste & Vent (DWV) Systems

Fixture trap seals and water seal depths (50mm - 100mm), induced/self-siphonage prevention, wet venting rules, soil stack vs. waste stack systems, septic tank two-chamber sedimentation and baffle design, soakaway aggregate filtration layout, soil percolation testing, inspection chamber manhole layout, and drainage pipe slope rules (1% to 2% grade).

10%

Blueprints, Calculations & Maintenance

Interpretation of architectural plumbing plans, symbols (WC, WHB, KS), isometric piping diagrams, cross-sectional area calculations, domestic water demand tank sizing (reserve capacity), vertical drop fall calculations, water velocity limits (1.5 m/s maximum), and troubleshooting common issues like low shower pressure, dry trap odor, or hammering pipes.

How to Pass the CTVET Ghana Certificate II — Plumbing Exam

What You Need to Know

Passing score: Grade C6 (50% or above) on the CTVET grading scale
Exam length: 50 questions
Time limit: 2 hours
Exam fee: GHS 300 - GHS 800 (varies by center)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CTVET Ghana Certificate II — Plumbing Study Tips from Top Performers

1Memorize the standard colors of copper tubing: Type K has a green stripe, Type L has a blue stripe, and Type M has a red stripe.

2Understand the PPR socket fusion temperature of 260 degrees Celsius and remember to mark insertion depth to avoid blocking the bore.

3Remember that the Factories, Offices and Shops Act, 1970 (Act 328) requires proper workshop ventilation and shoring of all trenches deeper than 1.5 meters.

4Practice calculating static pressure (approx. 9.8 kPa or 0.1 bar per 1 meter of elevation) and pipe cross-sectional area.

Frequently Asked Questions

What is the passing grade for the CTVET Plumbing Certificate II?

Under the current CTVET competency-based grading system, candidates must achieve at least a Grade C6 (50% or above) in both the theory paper and the practical skills examination to receive their national certificate.

What components are tested in the CTVET Plumbing exam?

The assessment consists of a written theory examination (Paper 1 objectives and Paper 2 essay/calculations) and a hands-on practical project where candidates must read a blueprint drawing and construct a piping assembly (e.g., using copper soldering, PPR socket fusion, or PVC solvent weld joints) and perform a pressure test.

Which local construction practices are covered in the water supply domain?

The water supply domain heavily emphasizes local Ghanaian setup requirements, including gravity-fed overhead storage polytanks, platform load calculations (1 kg per Liter), booster pump suction check valves, and proper installation of solar water heater panels facing South at equatorial tilt angles.

What types of drainage questions are featured on the exam?

Drainage questions focus on waste stack design, preventing trap siphonage, septic tank double-chamber baffle functions, soakaway pit sizing based on soil percolation tests, and ensuring a 1% to 2% slope for horizontal drainage runs to maintain self-cleansing velocity.