MINNEAPOLIS MASTER PLUMBER GASFITTER EXAM
QUESTIONS AND VERIFIED ANSWERS WITH RATIONALES
JUST RELEASED.PDF
MASTER PLUMBER/GASFITTER EXAMINATION
200 Practice Questions with Answers and Rationales
Jurisdictional focus: Minneapolis, Minnesota
Primary references: Minnesota Plumbing Code, Minnesota Fuel Gas Code, Minnesota
Mechanical Code, and Minneapolis competency requirements
Question format: Four-option multiple choice, one correct answer
Difficulty distribution: 60 basic recall, 100 application, 40 analysis/critical thinking
Exam Description
This comprehensive practice examination evaluates knowledge and application of plumbing and
fuel-gas requirements relevant to a Minneapolis master plumber/gasfitter. The questions cover
Minnesota plumbing administration and code principles, water supply, backflow prevention,
fixtures and water heaters, sanitary drainage, venting, traps and storm drainage, fuel-gas piping,
appliance installation, combustion air, venting, testing, and troubleshooting.
The examination is designed for study and review and should be used with the current adopted
Minnesota and Minneapolis requirements and the applicable code books when preparing for an
actual licensing or competency examination.
TABLE OF CONTENTS
Section 1 — Minnesota & Minneapolis Code, Licensing and Administration: Q1–Q25
Section 2 — General Plumbing Principles, Materials and Installation: Q26–Q50
Section 3 — Water Supply and Distribution: Q51–Q75
Section 4 — Backflow Prevention, Fixtures and Water Heaters: Q76–Q100
Section 5 — Sanitary Drainage and Indirect Waste: Q101–Q125
Section 6 — Venting, Traps, Interceptors and Storm Drainage: Q126–Q150
Section 7 — Fuel-Gas Piping, Sizing and Distribution: Q151–Q175
Section 8 — Combustion Air, Appliance Venting, Testing and Troubleshooting: Q176–Q200
SECTION 1 — MINNESOTA & MINNEAPOLIS CODE, LICENSING AND
ADMINISTRATION
,Questions 1–25
Question 1 — Basic Recall
Which Minnesota rule chapter contains the 2020 Minnesota Plumbing Code?
A. Chapter 1300
B. Chapter 1346
C. Chapter 4714
D. Chapter 7080
Correct answer: C
Rationale: Minnesota Rules Chapter 4714 is the Minnesota Plumbing Code. Chapter 1346
addresses mechanical and fuel-gas requirements, making B the principal distractor.
Question 2 — Basic Recall
The 2020 Minnesota Plumbing Code incorporates which edition of the Uniform Plumbing Code?
A. 2015 UPC
B. 2018 UPC
C. 2021 UPC
D. 2024 UPC
Correct answer: B
Rationale: Minnesota's 2020 Plumbing Code incorporates the 2018 edition of the UPC with
Minnesota amendments. The other editions are not the edition identified by the adopted
Minnesota code.
Question 3 — Basic Recall
The Minnesota Fuel Gas Code is principally contained in which rule chapter?
A. Chapter 4714
B. Chapter 1300
C. Chapter 1346
D. Chapter 7080
Correct answer: C
Rationale: Minnesota Rules Chapter 1346 contains the Minnesota Mechanical and Fuel Gas
Codes. Chapter 4714 is the plumbing code, so A is the primary distractor.
,Question 4 — Basic Recall
According to Minneapolis competency requirements, which trade is specifically identified as
requiring a competency card?
A. Fuel gas fitter
B. Carpenter
C. Painter
D. Drywall installer
Correct answer: A
Rationale: Minneapolis identifies fuel gas fitter among the trades requiring a competency card.
The other occupations listed are not the covered gas/plumbing trades identified on the cited
competency-card page.
Question 5 — Application
A contractor is planning fuel-gas piping work in Minneapolis. Which code framework should
primarily be consulted for the fuel-gas installation requirements?
A. Minnesota Plumbing Code only
B. Minnesota Fuel Gas Code under Chapter 1346
C. Minnesota Private Sewage Disposal Code
D. Minnesota Accessibility Code
Correct answer: B
Rationale: Fuel-gas piping and fuel-gas utilization equipment are regulated through Minnesota
Rules Chapter 1346. The plumbing code may govern associated plumbing work, but it is not the
principal fuel-gas code.
Question 6 — Basic Recall
The Minnesota Plumbing Code regulates which of the following?
A. Only new commercial construction
B. Only residential plumbing
C. Plumbing design and installation statewide, including additions, alterations, repairs and
replacements
D. Only underground plumbing
, Correct answer: C
Rationale: DLI states that the plumbing code regulates plumbing systems statewide for new
construction, additions, alterations, repairs and replacements. The narrower descriptions in A, B
and D are therefore incorrect.
Question 7 — Application
A plumber encounters a conflict between a general plumbing principle and a specific Minnesota
amendment to the adopted UPC. Which should control?
A. The general UPC provision regardless of amendment
B. The Minnesota amendment applicable to the installation
C. Manufacturer advertising
D. Local trade custom
Correct answer: B
Rationale: Minnesota adopts the UPC with Minnesota amendments, so applicable state
amendments govern where they modify the model-code provision. Trade custom cannot
supersede an adopted code requirement.
Question 8 — Basic Recall
Which Minnesota agency publishes the state's plumbing-code information and administers state
plumbing licensing functions?
A. Minnesota Department of Labor and Industry
B. Minnesota Department of Transportation
C. Minnesota Department of Agriculture
D. Minnesota Department of Commerce exclusively
Correct answer: A
Rationale: The Minnesota Department of Labor and Industry administers the state's plumbing
regulatory program and publishes plumbing-code materials. The other agencies do not administer
Minnesota plumbing licensing in this manner.
Question 9 — Application
A licensed plumber wants to perform covered Minneapolis work requiring a competency card.
Which statement is most accurate?
QUESTIONS AND VERIFIED ANSWERS WITH RATIONALES
JUST RELEASED.PDF
MASTER PLUMBER/GASFITTER EXAMINATION
200 Practice Questions with Answers and Rationales
Jurisdictional focus: Minneapolis, Minnesota
Primary references: Minnesota Plumbing Code, Minnesota Fuel Gas Code, Minnesota
Mechanical Code, and Minneapolis competency requirements
Question format: Four-option multiple choice, one correct answer
Difficulty distribution: 60 basic recall, 100 application, 40 analysis/critical thinking
Exam Description
This comprehensive practice examination evaluates knowledge and application of plumbing and
fuel-gas requirements relevant to a Minneapolis master plumber/gasfitter. The questions cover
Minnesota plumbing administration and code principles, water supply, backflow prevention,
fixtures and water heaters, sanitary drainage, venting, traps and storm drainage, fuel-gas piping,
appliance installation, combustion air, venting, testing, and troubleshooting.
The examination is designed for study and review and should be used with the current adopted
Minnesota and Minneapolis requirements and the applicable code books when preparing for an
actual licensing or competency examination.
TABLE OF CONTENTS
Section 1 — Minnesota & Minneapolis Code, Licensing and Administration: Q1–Q25
Section 2 — General Plumbing Principles, Materials and Installation: Q26–Q50
Section 3 — Water Supply and Distribution: Q51–Q75
Section 4 — Backflow Prevention, Fixtures and Water Heaters: Q76–Q100
Section 5 — Sanitary Drainage and Indirect Waste: Q101–Q125
Section 6 — Venting, Traps, Interceptors and Storm Drainage: Q126–Q150
Section 7 — Fuel-Gas Piping, Sizing and Distribution: Q151–Q175
Section 8 — Combustion Air, Appliance Venting, Testing and Troubleshooting: Q176–Q200
SECTION 1 — MINNESOTA & MINNEAPOLIS CODE, LICENSING AND
ADMINISTRATION
,Questions 1–25
Question 1 — Basic Recall
Which Minnesota rule chapter contains the 2020 Minnesota Plumbing Code?
A. Chapter 1300
B. Chapter 1346
C. Chapter 4714
D. Chapter 7080
Correct answer: C
Rationale: Minnesota Rules Chapter 4714 is the Minnesota Plumbing Code. Chapter 1346
addresses mechanical and fuel-gas requirements, making B the principal distractor.
Question 2 — Basic Recall
The 2020 Minnesota Plumbing Code incorporates which edition of the Uniform Plumbing Code?
A. 2015 UPC
B. 2018 UPC
C. 2021 UPC
D. 2024 UPC
Correct answer: B
Rationale: Minnesota's 2020 Plumbing Code incorporates the 2018 edition of the UPC with
Minnesota amendments. The other editions are not the edition identified by the adopted
Minnesota code.
Question 3 — Basic Recall
The Minnesota Fuel Gas Code is principally contained in which rule chapter?
A. Chapter 4714
B. Chapter 1300
C. Chapter 1346
D. Chapter 7080
Correct answer: C
Rationale: Minnesota Rules Chapter 1346 contains the Minnesota Mechanical and Fuel Gas
Codes. Chapter 4714 is the plumbing code, so A is the primary distractor.
,Question 4 — Basic Recall
According to Minneapolis competency requirements, which trade is specifically identified as
requiring a competency card?
A. Fuel gas fitter
B. Carpenter
C. Painter
D. Drywall installer
Correct answer: A
Rationale: Minneapolis identifies fuel gas fitter among the trades requiring a competency card.
The other occupations listed are not the covered gas/plumbing trades identified on the cited
competency-card page.
Question 5 — Application
A contractor is planning fuel-gas piping work in Minneapolis. Which code framework should
primarily be consulted for the fuel-gas installation requirements?
A. Minnesota Plumbing Code only
B. Minnesota Fuel Gas Code under Chapter 1346
C. Minnesota Private Sewage Disposal Code
D. Minnesota Accessibility Code
Correct answer: B
Rationale: Fuel-gas piping and fuel-gas utilization equipment are regulated through Minnesota
Rules Chapter 1346. The plumbing code may govern associated plumbing work, but it is not the
principal fuel-gas code.
Question 6 — Basic Recall
The Minnesota Plumbing Code regulates which of the following?
A. Only new commercial construction
B. Only residential plumbing
C. Plumbing design and installation statewide, including additions, alterations, repairs and
replacements
D. Only underground plumbing
, Correct answer: C
Rationale: DLI states that the plumbing code regulates plumbing systems statewide for new
construction, additions, alterations, repairs and replacements. The narrower descriptions in A, B
and D are therefore incorrect.
Question 7 — Application
A plumber encounters a conflict between a general plumbing principle and a specific Minnesota
amendment to the adopted UPC. Which should control?
A. The general UPC provision regardless of amendment
B. The Minnesota amendment applicable to the installation
C. Manufacturer advertising
D. Local trade custom
Correct answer: B
Rationale: Minnesota adopts the UPC with Minnesota amendments, so applicable state
amendments govern where they modify the model-code provision. Trade custom cannot
supersede an adopted code requirement.
Question 8 — Basic Recall
Which Minnesota agency publishes the state's plumbing-code information and administers state
plumbing licensing functions?
A. Minnesota Department of Labor and Industry
B. Minnesota Department of Transportation
C. Minnesota Department of Agriculture
D. Minnesota Department of Commerce exclusively
Correct answer: A
Rationale: The Minnesota Department of Labor and Industry administers the state's plumbing
regulatory program and publishes plumbing-code materials. The other agencies do not administer
Minnesota plumbing licensing in this manner.
Question 9 — Application
A licensed plumber wants to perform covered Minneapolis work requiring a competency card.
Which statement is most accurate?
