Tennessee Plumbing Contractor Examination
(CMC-A Plumbing) Practice Questions and Correct
Answers (Verified Answers) Plus Rationale 2027
Q&A| Instant Download Pdf
Question 1
What work is primarily covered by the Tennessee CMC-A classification?
A. HVAC and refrigeration only
B. Process piping only
C. Plumbing and gas piping
D. Fire sprinkler installation only
Answer: C. Plumbing and gas piping
Rationale: CMC-A is the Tennessee Mechanical Contracting
classification specifically designated for plumbing and gas piping.
HVAC and refrigeration are generally covered under CMC-C, while
process piping is CMC-B. Understanding classification scope is
important because contractors must operate within the classification
authorized by their license.
,Question 2
Which Tennessee mechanical classification covers HVAC, refrigeration,
and gas piping?
A. CMC-A
B. CMC-B
C. CMC-C
D. CMC-E
Answer: C. CMC-C
Rationale: CMC-C covers HVAC, refrigeration, and gas piping, while
CMC-A is focused on plumbing and gas piping. A contractor should
verify the exact classification and scope before bidding or performing
specialized mechanical work.
Question 3
What is required before an applicant may take the Tennessee CMC-A
plumbing trade examination?
A. A building permit
B. A municipal plumbing license
C. Board pre-approval
D. A fire sprinkler license
,Answer: C. Board pre-approval
Rationale: Tennessee requires pre-approval for applicants seeking to
take the CMC-A plumbing examination. The Board's current
examination information states that applicants must request approval
before taking the plumbing CMC-A or full CMC examination.
Question 4
According to Tennessee's current contractor information, beginning
July 1, 2026, which organization began administering the Board's
contractor trade examinations?
A. Prometric
B. PSI exclusively
C. Pearson VUE
D. Prov
Answer: D. Prov
Rationale: Tennessee's Board for Licensing Contractors announced
that Prov became the new trade-exam provider beginning July 1,
2026. Existing PSI appointments after that date may continue under
the transition arrangements described by the Board.
, Question 5
A contractor is performing plumbing work as a subcontractor on a
project. When does Tennessee generally require a contractor license
for qualifying mechanical or plumbing subcontract work?
A. $5,000 or more
B. $10,000 or more
C. $15,000 or more
D. $25,000 or more
Answer: D. $25,000 or more
Rationale: Tennessee generally requires a contractor's license before
contracting, including certain subcontracting, when the applicable
project or portion reaches $25,000 or more. Plumbing and mechanical
subcontractors are specifically included in the state's contractor
licensing information.
Question 6
Which component prevents sewer gases from entering a building
through a plumbing fixture?
A. Cleanout
B. Water meter
(CMC-A Plumbing) Practice Questions and Correct
Answers (Verified Answers) Plus Rationale 2027
Q&A| Instant Download Pdf
Question 1
What work is primarily covered by the Tennessee CMC-A classification?
A. HVAC and refrigeration only
B. Process piping only
C. Plumbing and gas piping
D. Fire sprinkler installation only
Answer: C. Plumbing and gas piping
Rationale: CMC-A is the Tennessee Mechanical Contracting
classification specifically designated for plumbing and gas piping.
HVAC and refrigeration are generally covered under CMC-C, while
process piping is CMC-B. Understanding classification scope is
important because contractors must operate within the classification
authorized by their license.
,Question 2
Which Tennessee mechanical classification covers HVAC, refrigeration,
and gas piping?
A. CMC-A
B. CMC-B
C. CMC-C
D. CMC-E
Answer: C. CMC-C
Rationale: CMC-C covers HVAC, refrigeration, and gas piping, while
CMC-A is focused on plumbing and gas piping. A contractor should
verify the exact classification and scope before bidding or performing
specialized mechanical work.
Question 3
What is required before an applicant may take the Tennessee CMC-A
plumbing trade examination?
A. A building permit
B. A municipal plumbing license
C. Board pre-approval
D. A fire sprinkler license
,Answer: C. Board pre-approval
Rationale: Tennessee requires pre-approval for applicants seeking to
take the CMC-A plumbing examination. The Board's current
examination information states that applicants must request approval
before taking the plumbing CMC-A or full CMC examination.
Question 4
According to Tennessee's current contractor information, beginning
July 1, 2026, which organization began administering the Board's
contractor trade examinations?
A. Prometric
B. PSI exclusively
C. Pearson VUE
D. Prov
Answer: D. Prov
Rationale: Tennessee's Board for Licensing Contractors announced
that Prov became the new trade-exam provider beginning July 1,
2026. Existing PSI appointments after that date may continue under
the transition arrangements described by the Board.
, Question 5
A contractor is performing plumbing work as a subcontractor on a
project. When does Tennessee generally require a contractor license
for qualifying mechanical or plumbing subcontract work?
A. $5,000 or more
B. $10,000 or more
C. $15,000 or more
D. $25,000 or more
Answer: D. $25,000 or more
Rationale: Tennessee generally requires a contractor's license before
contracting, including certain subcontracting, when the applicable
project or portion reaches $25,000 or more. Plumbing and mechanical
subcontractors are specifically included in the state's contractor
licensing information.
Question 6
Which component prevents sewer gases from entering a building
through a plumbing fixture?
A. Cleanout
B. Water meter
