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100+ Free NM CID MM-2 Practice Questions

Prepare for the New Mexico CID MM-2 Natural Gas Fitting Examination exam with instant access — no signup required.

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2026 Statistics

Key Facts: NM CID MM-2 Exam

75%

Passing Score

PSI NM Contractor Bulletin 4/3/2026

100 Q

Official Exam Questions

PSI NM Contractor Bulletin 4/3/2026

255 min

Time Allowed

PSI NM Contractor Bulletin 4/3/2026

USD 68.88

PSI Exam Fee

PSI NM Contractor Bulletin 4/3/2026

NM CID MM-2 is a 100-question PSI natural gas fitting exam, 75% pass, 255 minutes, USD 68.88 (bulletin 4/3/2026).

Sample NM CID MM-2 Practice Questions

Try these sample questions to test your NM CID MM-2 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1How many years of experience does NMAC 14.6.6 require for the MM-2 natural gas fitting classification?
A.Four years
B.Two years
C.Six years
D.One year of classroom training only
Explanation: NMAC 14.6.6.11 lists MM-2 Natural gas fitting as requiring four years of experience. That same four-year experience floor applies to MM-1, MM-3, MM-4, and MM-98. Two years is the journeyman or some specialty-classification floor, not the MM-2 contractor license.
2Which fuel-gas work is expressly outside the MM-2 classification in NMAC 14.6.6?
A.Natural-gas piping to a listed furnace
B.A listed natural-gas water heater
C.Liquefied-petroleum-gas (LP-gas) systems
D.A warm-air furnace flue connection
Explanation: NMAC 14.6.6.11 states that MM-2 may not install LP-gas systems. Natural-gas piping, listed gas appliances, and warm-air flue connections are inside the MM-2 scope. LP-gas facilities in New Mexico follow the LPG and CNG Act and 19.15.40 NMAC, not an MM-2 ticket.
3An MM-2 contractor is asked to install a hydronic hot-water heating system. What pressure and input limits does NMAC 14.6.6 place on that MM-2 work?
A.Not exceeding 30 psi or 400,000 Btu/h input
B.Any pressure or input, because MM-2 is unlimited mechanical
C.Not exceeding 15 psi and 100,000 Btu/h only
D.Steam systems only; hot-water heating is MM-3 work
Explanation: NMAC 14.6.6.11 authorizes MM-2 to install hot-water heating systems not exceeding 30 psi or 400,000 Btu/h input. Steam and hot-water boilers are also listed in the MM-2 scope. MM-2 is not an unlimited mechanical license; MM-98 covers MM-1 through MM-4.
4When an MM-2 job needs a water connection for a boiler or hydronic appliance, what water-piping work does NMAC 14.6.6 authorize?
A.Connection of water only to existing valved outlets
B.A complete new potable-water service from the meter
C.Any underground water main in the public right-of-way
D.No water piping of any kind
Explanation: The MM-2 scope says the licensee may connect water to existing valved outlets. That is a limited connection, not a license to run a new water service or public water main. Broader plumbing is MM-1 or MM-98 work.
5Which group of warm-air heating items is listed inside the MM-2 scope in NMAC 14.6.6?
A.Chimney connections, flues, refractories, burners, fittings, valves, thermal insulation, accessories, and incidental piping
B.Only the gas valve; flues and insulation belong to MM-3
C.Refrigerant piping, evaporator coils, and condensing units
D.LP-gas tank sets and first-stage regulators
Explanation: NMAC 14.6.6.11 includes warm-air heating systems with chimney connections, flues, refractories, burners, fittings, valves, thermal insulation, accessories, and incidental piping, plus warm-air appliances and other listed gas appliances. Refrigeration and LP-gas tank work are outside MM-2.
6Which control work is inside the MM-2 classification?
A.Incidental controls, control wiring, and pneumatic control systems
B.Building service-entrance electrical panels
C.Fire-alarm initiating devices throughout the building
D.High-voltage motor starters for 480-volt rooftop units
Explanation: NMAC 14.6.6.11 includes incidental controls and control wiring and pneumatic control systems in the MM-2 scope. That is appliance and heating-system control work, not general building electrical, fire-alarm, or 480-volt power wiring.
7Does the MM-2 classification include excavation needed to install natural-gas piping?
A.Yes; the classification includes all required excavating, trenching, and backfilling
B.No; all digging must be subcontracted to a GS-8 licensee
C.Only hand digging to 6 inches is allowed
D.Only boring under public streets is allowed
Explanation: NMAC 14.6.6.11 states that MM-2 includes all required excavating, trenching, and backfilling. The excavation is incidental to the gas-fitting work, not a separate earthmoving contract. Street-utility mains and unrelated site work remain outside the classification.
8What code does 14.9.2 NMAC adopt as the 2021 New Mexico Mechanical Code?
A.The 2021 International Mechanical Code with no changes
B.The 2015 International Fuel Gas Code only
C.The 2021 Uniform Mechanical Code, as amended by 14.9.2 NMAC
D.NFPA 58 as the mechanical code
Explanation: 14.9.2.8 NMAC adopts the 2021 UMC by reference, as amended by that rule, and names it the 2021 New Mexico Mechanical Code. The PSI MM-2 bulletin also lists UMC 2021 and NMAC 14.9.2 (2015) among the allowed references. The IMC and NFPA 58 are not the adopted New Mexico mechanical code.
9Under 14.9.2.10 NMAC, who is the authority having jurisdiction for the New Mexico Mechanical Code?
A.The local gas utility only
B.Any homeowner on the job
C.CID and the mechanical-plumbing trade bureau chief
D.The International Association of Plumbing and Mechanical Officials
Explanation: 14.9.2.10 NMAC replaces the UMC AHJ definition: the authority having jurisdiction is CID and the mechanical-plumbing trade bureau chief for adoption, interpretation, and enforcement of the state-adopted mechanical code as the statewide minimum. The utility may have its own meter and service rules, but it is not the mechanical-code AHJ.
1014.9.2.10 NMAC keeps the UMC definition of listed (third-party certified) and adds which New Mexico rule?
A.Only UL-listed appliances may be used
B.Listing is waived if the contractor has an MM-2 license
C.A manufacturer may select an ANSI-accredited independent certification organization, or another certifier CID has approved in writing
D.Owner affidavits replace product listing
Explanation: 14.9.2.10 NMAC allows the manufacturer to choose the independent certification organization if it is ANSI-accredited or otherwise approved in writing by CID. An MM-2 license and an owner letter do not waive listing. UL is one acceptable laboratory, not the only one.

About the NM CID MM-2 Exam

The New Mexico CID MM-2 examination covers natural gas fitting. The official open-book PSI exam has 100 scored questions, a 75% passing standard (75 points), and 255 minutes allowed. Allowed references include UMC 2021, Modern Refrigeration and Air Conditioning (19th or 20th edition), IPT's Pipe Trades Handbook (2016), UPC 2021, NMAC 14.8.2 (2015), and NMAC 14.9.2 (2015). NMAC 14.6.6 MM-2 requires four years of experience and covers natural-gas piping and fittings, hot-water heating not exceeding 30 psi or 400,000 Btu/h input, steam and hot-water boilers, warm-air heating systems, listed gas appliances, incidental controls, and excavation. It does not authorize LP-gas systems. PSI lists the fee at USD 68.88 (bulletin updated 4/3/2026). This English-language MCQ bank is a study aid, not an official PSI form.

Questions

100 scored questions

Time Limit

255 minutes

Passing Score

75% (75 of 100 points)

Exam Fee

USD 68.88 (PSI Services LLC (for New Mexico Construction Industries Division))

NM CID MM-2 Exam Content Outline

16%

General Knowledge and Principles

General knowledge and principles (16 items)

19%

Piping

Piping (19 items)

13%

Gas Sizing

Gas sizing (13 items)

8%

Safety and Testing

Safety and testing (8 items)

15%

Appliances

Appliances (15 items)

9%

Combustion Air

Combustion air (9 items)

10%

Chimneys, Flues, and Vents

Chimneys, flues, and vents (10 items)

10%

Heating Systems

Heating systems (10 items)

How to Pass the NM CID MM-2 Exam

What You Need to Know

  • Passing score: 75% (75 of 100 points)
  • Exam length: 100 questions
  • Time limit: 255 minutes
  • Exam fee: USD 68.88

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NM CID MM-2 Study Tips from Top Performers

1Piping and gas sizing are 32 of 100 official items. Study UMC 2021 gas chapters with NMAC 14.9.2 (2015).
2This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the NM MM-2 exam?

The official PSI examination has 100 scored questions. Passing is 75% (75 points) within 255 minutes (bulletin updated 4/3/2026).