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100+ Free NV C-1C Pipe and Duct Insulation Practice Questions

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2026 Statistics

Key Facts: NV C-1C Pipe and Duct Insulation Exam

30 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

70%

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

1 hour

Time Allowed

PSI Nevada Contractor CIB updated 3/25/2026

USD 95

PSI Exam Fee (one portion)

PSI Nevada Contractor CIB updated 3/25/2026

Open Book

Book Policy

PSI Nevada Contractor CIB updated 3/25/2026

Nevada C-1C Pipe and Duct Insulation Contractor Examination is the official NSCB/PSI open book exam: 30 questions, 70% (21 of 30 points), 1 hour, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English.

Sample NV C-1C Pipe and Duct Insulation Practice Questions

Try these sample questions to test your NV C-1C Pipe and Duct Insulation exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary purpose of insulating hot-water and steam piping under the Nevada C-1C scope?
A.To reduce heat loss from the fluid to the surrounding space
B.To increase the pipe's pressure rating
C.To replace the need for expansion joints
D.To make steel pipe potable-water certified
Explanation: NAC 624.190 defines C-1C work as insulation of pipes, ducts, and related equipment. On heating systems the insulation's first job is to cut heat loss so the fluid stays at design temperature and energy is not wasted. UMC 2018 Table E 503.7.3(1) sets those energy-based thicknesses.
2What does the R-value of pipe or duct insulation measure?
A.Thermal resistance to heat flow
B.Flame-spread index under ASTM E84
C.Compressive strength in pounds per square inch
D.Water-vapor permeance
Explanation: R-value is thermal resistance (h·ft²·°F/Btu). Higher R means less heat flow for a given temperature difference. U-factor is the reciprocal. UMC 2018 requires factory-made duct insulation to be printed with the R-value at installed thickness.
3Under UMC 2018 hydronic rules, insulation on occupant-accessible piping must keep the touchable surface at or below what temperature?
A.100°F (38°C)
B.120°F (49°C)
C.140°F (60°C)
D.180°F (82°C)
Explanation: UMC 2018 Chapter 12 requires hydronic piping surfaces that people can touch to stay at or below 140°F (60°C). Table E 503.7.3(1) footnote 2 also states the table thicknesses are energy-only and that extra thickness is allowed for personnel-protection surface temperature.
4Which material is the usual factory-molded covering for heating piping up to about 850°F?
A.Flexible elastomeric foam
B.Preformed fiberglass pipe insulation with an all-service jacket
C.Expanded polystyrene bead board
D.Open-cell spray polyurethane
Explanation: Preformed fiberglass pipe insulation with ASJ is the standard product for hydronic heating and domestic hot water in the UMC temperature bands. Typical service is about −20°F to 850°F. Elastomeric foam is preferred on cold piping because it is a closed-cell vapor retarder.
5On chilled-water piping, where must the vapor retarder be placed?
A.On the pipe surface under the insulation
B.On the outside of the insulation, sealed at every joint and penetration
C.Only on the ends of each pipe length
D.Vapor retarders are never used on cold piping
Explanation: Cold piping is below ambient dew point, so moisture tries to move inward. The vapor retarder belongs on the warm (outer) face of the insulation and must be continuous. Table E 503.7.3(2) footnote 2 says vapor permeability and surface condensation require a vapor retarder or extra insulation — energy thickness alone is not enough.
6What does ASJ stand for on factory-jacketed pipe insulation?
A.All-service jacket
B.Asbestos seal jacket
C.Aluminum steam jacket
D.Acoustic sound jacket
Explanation: ASJ is the all-service jacket — a factory facing (typically white kraft/scrim/foil) that serves as a vapor retarder and cleanable indoor finish. Longitudinal laps are often self-sealing (SSL). Outdoor work still needs a weather jacket over the ASJ.
7Per UMC 2018 Table E 503.7.3(1), what is the minimum insulation thickness on 3/4-inch heating piping operating at 120°F?
A.0.5 inch
B.1.0 inch
C.1.5 inches
D.2.5 inches
Explanation: 120°F falls in the 105–140°F row. Nominal pipe smaller than 1 inch is in the first thickness column, which is 1.0 inch. That row uses conductivity 0.22–0.28 Btu·in/(h·ft²·°F) at a 100°F mean rating temperature.
8Per UMC 2018 Table E 503.7.3(2), what is the minimum insulation thickness on 1/2-inch chilled-water piping operating at 45°F?
A.0.5 inch
B.1.0 inch
C.1.5 inches
D.2.0 inches
Explanation: 45°F is in the 40–60°F cooling row. Pipe smaller than 1 inch takes 0.5 inch. The same 0.5 inch applies through the 1-to-less-than-1-1/2-inch column; 1.0 inch starts at 1-1/2 inches.
9Pipe insulation installed outdoors and exposed to weather must be protected by which of the following?
A.A weather jacket suitable for outdoor service, such as aluminum, sheet metal, or a listed outdoor coating
B.An extra layer of unfaced fiberglass only
C.Duct tape wrapped in a spiral
D.No protection if the ASJ is white
Explanation: Insulation exposed to weather must be shielded from sunlight, moisture, and wind. Common covers are aluminum or stainless jacketing, painted canvas, or a listed outdoor coating. Cellular foam may be painted with a water-retardant, UV-shielding coating. ASJ alone is an indoor finish.
10Which insulation is preferred for direct-buried chilled-water piping because it is impermeable and crush-resistant when properly cased?
A.Unjacketed fiberglass wrap
B.Open-cell spray foam
C.Cellular glass (cellular foamglass) in a waterproof, noncrushable casing
D.Mineral-wool batts in a cardboard carton
Explanation: Cellular glass is closed-cell, essentially impermeable, and commonly specified for underground chilled water when placed in a waterproof, noncrushable casing or as a listed underground system. Table E 503.7.3(2) footnote 3 allows omitting insulation on direct-buried cooling pipe, but if insulation is used it must survive soil moisture and load.

About the NV C-1C Pipe and Duct Insulation Exam

The Nevada C-1C Pipe and Duct Insulation Contractor Examination is the official Nevada State Contractors Board trade or management examination administered by PSI Services LLC. The official exam has 30 scored questions. Passing is 70% (21 of 30 points) in 1 hour. The examination is open book. Approved center references include Uniform Mechanical Code, 2018 (allowed in center). PSI lists USD 95 for one examination portion and USD 140 if taken with CMS; otherwise USD 95 per trade exam (Candidate Information Bulletin updated 3/25/2026). NSCB requires a separate CMS examination for most new applicants, plus a USD 300 application fee and a USD 600 biennial license fee. This English-language MCQ bank is a study aid, not an official PSI form. It does not replace required trade experience, board approval, fingerprints, bonding, or the official examination.

Assessment

Open Book computer-based multiple-choice. Uniform Mechanical Code, 2018 (allowed in center)

Time Limit

1 hour

Passing Score

70% (21 of 30 points)

Exam Fee

USD 95 (PSI Services LLC (for the Nevada State Contractors Board))

NV C-1C Pipe and Duct Insulation Exam Content Outline

40%

Pipe Insulation

Pipe insulation materials and installation (12 items)

40%

Duct Insulation

Duct insulation materials and installation (12 items)

20%

Safety

Insulation safety (6 items)

How to Pass the NV C-1C Pipe and Duct Insulation Exam

What You Need to Know

  • Passing score: 70% (21 of 30 points)
  • Assessment: Open Book computer-based multiple-choice. Uniform Mechanical Code, 2018 (allowed in center)
  • Time limit: 1 hour
  • Exam fee: USD 95

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

NV C-1C Pipe and Duct Insulation Study Tips from Top Performers

1Distribute study time to the official bulletin 270 content outline (updated 3/25/2026)
2Use only the PSI-listed references; temporary tabs such as Post-it notes are prohibited
3Confirm NSCB experience documentation before scheduling with PSI
4This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the Nevada C-1C Pipe and Duct Insulation Contractor Examination?

The official PSI examination has 30 scored questions. Passing is 70% (21 of 30 points) within 1 hour (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-1C Pipe and Duct Insulation exam cost?

PSI lists USD 95 for one examination portion. Two portions cost USD 140 only if the second portion is CMS. NSCB charges a separate USD 300 application fee and USD 600 biennial license fee.

Is the NV C-1C Pipe and Duct Insulation exam open book?

Yes. PSI lists this examination as open book. Uniform Mechanical Code, 2018 (allowed in center)

Do I still need the CMS examination?

CMS is the required Nevada business-and-law examination. Most new applicants must pass CMS and a trade examination for the requested classification. In most cases you will not retake an exam if you have actively served as a qualified employee in the same classification within the last four years.