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Key Facts: ACS Domestic Gas Cookers Exam Exam

100%

Passing Score

Exam Body

1.5 hours

Time Limit

Exam Body

GBP 120

Exam Fee

Exam Body

Get ready for the ACS Domestic Gas Cookers Exam certification exam with our verified practice questions.

Sample ACS Domestic Gas Cookers Exam Practice Questions

Try these sample questions to review concepts for the ACS Domestic Gas Cookers Exam exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the minimum recommended clearance from the side of a gas cooker to adjacent combustible material, such as kitchen cabinets, unless otherwise specified by the manufacturer?
A.0 mm
B.50 mm
C.100 mm
D.150 mm
Explanation: According to current UK gas safety standards (e.g., BS 6172 and manufacturer's instructions), if a manufacturer does not specify otherwise, modern gas cookers are generally designed to have 'zero' side clearance to adjacent combustible materials, provided the materials are heat-resistant or protected. The cooker's design and thermal performance prevent excessive heat transfer to the sides. Note that this applies to units at worktop/hob height; combustible surfaces that project above hob level must instead be kept at least 65 mm clear under BS 6172. Always check the manufacturer's instructions as they take precedence.
2Which of the following is NOT a primary requirement for adequate ventilation when installing a gas cooker in a domestic property?
A.Providing a permanently open vent to the outside air if the room volume is insufficient.
B.Ensuring the room has an extract fan if the cooker's heat input exceeds a specific value.
C.Checking that the room volume exceeds 5m³ if the appliance has an automatic ignition system.
D.Confirming that permanent ventilation is provided for appliances with a heat input exceeding 14kW.
Explanation: While an extract fan is beneficial for removing cooking fumes and moisture, it is generally NOT a mandatory primary requirement for adequate combustion air or preventing carbon monoxide build-up specifically due to a cooker's heat input. Ventilation requirements primarily focus on room volume and permanent air vents for combustion. The other options directly relate to standard ventilation provisions for gas appliances.
3When installing a new gas cooker, what is the maximum permissible length for a flexible gas connection hose (according to current UK standards)?
A.0.5 meters
B.1.0 meter
C.1.5 meters
D.2.0 meters
Explanation: According to BS 669-1, which covers flexible gas cooker hoses, the maximum permissible length for a domestic gas cooker hose is 1.0 meter. This standard ensures the hose is not excessively long, which could lead to kinking, damage, or difficulties in positioning the appliance securely.
4What is the primary purpose of a stability chain or anti-tilt device fitted to a freestanding gas cooker?
A.To prevent the cooker from vibrating during operation.
B.To ensure the cooker remains level on uneven floors.
C.To prevent the cooker from tipping forward when weight is applied to an open oven door.
D.To secure the cooker firmly to the gas supply pipe.
Explanation: The primary purpose of a stability chain or anti-tilt device is to prevent the cooker from tipping forward, especially when a heavy item is placed on an open oven door. This is a crucial safety feature to prevent burns or injuries from hot food or the appliance itself falling over.
5Which of the following is a critical electrical safety check for an electrically ignited gas cooker during installation?
A.Ensuring the cooker is connected to a 30 Amp fuse.
B.Verifying that the cooker is connected to a dedicated radial circuit.
C.Confirming that the cooker's metal case is effectively earthed (bonded).
D.Checking that the supply voltage is exactly 240V.
Explanation: Confirming that the cooker's metal case is effectively earthed (bonded) is a critical electrical safety check. Earthing provides a safe path for fault current, preventing the metal casing from becoming live if an electrical fault occurs, thereby protecting users from electric shock. This is a fundamental principle of electrical safety.
6When testing a newly installed gas cooker, what is the primary method for checking for gas leaks at connections?
A.Using a lit match or naked flame.
B.Applying soapy water or approved leak detection fluid.
C.Smelling for gas near the joints.
D.Listening for a hissing sound at the connections.
Explanation: Applying soapy water or an approved leak detection fluid to all gas connections is the primary and safest method for checking for gas leaks. The formation of bubbles indicates a leak, providing a visual confirmation without the risk of ignition. This method is far more reliable and safer than using a flame or relying solely on senses.
7What is the primary function of an isolation valve installed in the gas supply pipework to a domestic gas cooker?
A.To regulate the gas pressure to the cooker.
B.To automatically shut off the gas in case of a leak.
C.To allow the gas supply to the cooker to be manually turned off for maintenance or in an emergency.
D.To filter impurities from the gas supply.
Explanation: The primary function of an isolation valve is to allow the gas supply to the cooker to be manually turned off. This is essential for safety during maintenance, servicing, or in an emergency situation (e.g., a gas leak detected) without affecting the gas supply to other appliances in the property.
8According to BS 6172, combustible surfaces (such as tall units or walls) that project above hob level must be kept at least 65 mm clear of the cooker. Up to what height above the hotplate does this side-clearance requirement apply?
A.200 mm
B.300 mm
C.400 mm
D.600 mm
Explanation: BS 6172 (and the manufacturer installation guidance that follows it) requires that where a cooker is installed next to a tall cupboard, partition or wall that projects above hob level, a side clearance of at least 65 mm is maintained for a minimum height of 400 mm above hotplate level, and the projecting surface should be protected with heat-resistant material. Below hob level, worktop-height units may sit adjacent to the cooker.
9When replacing a gas cooker, what must an installer ALWAYS do regarding the existing gas supply pipework?
A.Upgrade the entire gas supply pipework to 22mm diameter.
B.Ensure the pipework is adequately sized for the new appliance's heat input and suitable for purpose.
C.Remove all existing pipework and install new from the meter.
D.Paint all exposed gas pipework yellow for identification.
Explanation: When replacing a gas cooker, the installer must always ensure that the existing gas supply pipework is adequately sized for the new appliance's heat input and remains suitable for its purpose, including being safe, sound, and correctly supported. This involves performing gas tightness tests and visual inspections.
10After installing a gas cooker, what information is legally required to be provided to the end-user?
A.A copy of the Gas Safety (Installation and Use) Regulations.
B.The manufacturer's instructions for use and servicing, and a commissioning report/certificate.
C.A detailed diagram of the entire household gas supply system.
D.A list of all gas engineers certified in the local area.
Explanation: Upon completion of a gas cooker installation, the installer is legally required to provide the end-user with the manufacturer's instructions for safe use and servicing. Additionally, a commissioning report or certificate detailing the work done, safety checks performed, and the appliance's settings is essential for compliance and the user's records. This ensures the user has all necessary information for safe operation and maintenance.

About the ACS Domestic Gas Cookers Exam Exam

Comprehensive practice question bank for the ACS Domestic Gas Cookers Exam exam.

Exam sponsor: Gas Safe Register / ACS Scheme. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

100 questions

Time Limit

1.5 hours

Passing Score

100%

Exam / Certification Fees

GBP 120

Exam sponsor website

Reported exam pass rate: N/A. Passing rates are regulated by the exam body. 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.

20%

Cooker Installation Standards

Stability brackets, flexible hoses, clearance distances, and positioning.

20%

Cooker Ventilation Combustion

Room volume calculations, ventilation margins, and flue analysis.

20%

Cooker Safety Devices

Flame supervision devices, lid shut-off valves, and thermostats.

20%

Cooker Commissioning Checks

Inlet pressure test, burner aeration, and user demonstration.

20%

Cooker Servicing Maintenance

Cleaning injectors, checking seals, and leak testing controls.

Preparing for the ACS Domestic Gas Cookers Exam Exam

What You Need to Know

  • Passing score: 100%
  • Exam length: 100 questions
  • Time limit: 1.5 hours
  • Exam / certification fees: GBP 120 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

ACS Domestic Gas Cookers Exam: Suggested Study Strategy

1Review the official syllabus and study guides.
2Understand the core legal and practical frameworks.
3Practice time-management using full mock assessments.
4Take note of incorrect answers and review the detailed explanations.

Frequently Asked Questions

What is the passing score for ACS Domestic Gas Cookers Exam?

The passing score is typically 100%.

How long is the ACS Domestic Gas Cookers Exam exam?

The exam has a time limit of 1.5 hours.

How many questions are on the ACS Domestic Gas Cookers Exam exam?

The official exam format may vary, but our practice bank provides 100 comprehensive questions covering the entire syllabus.