NCCCO CORE CERTIFICATION EXAM PREP
2025/2026 WITH 150 ACTUAL EXAM QUESTIONS
AND CORRECT ANSWERS/ REAL NCCCO CORE
EXAM 2025 (BRAND NEW!!)
• 150 authentic exam questions with verified correct answers
• Aligned with 2025–2026 NCCCO exam standards
• Covers safety, load handling, OSHA, and site hazard awareness
• Designed for Core Certification candidates
• Latest and most reliable prep resource
1. are fluorocarbon refrigerants that cause no harm to stratospheric ozone.
A.CFCS
B.HCFCS
C.HFCs
D.HalonsTM - CORRECT ANSWER-C
2. The Clean Air Act_.
A. calls for the phaseout of PFC refrigerant production
B. requires that all leaks be fixed within 30 days
C. requires OSHA to set standards for the recovery of refrigerants prior to appliance disposal
D.prohibits CFC/HCFC venting as of July 1,1992 - CORRECT ANSWER-D
3. Refrigerant is the type of contamination that is the most difficult for a reclaiming facility to
eliminate.
A. with air
B. with moisture
C. from an acid burnout
D. containing particulate contaminants - CORRECT ANSWER-C
, is a CFC refrigerant.
A.R-134a
B.R-123
C.R-22
D.R-12 - CORRECT ANSWER-D
Chlorine in the stratosphere is believed to come primarily from CFCs rather than natural sources
such as volcanoes because_.
A. the rise in the amount of chlorine measured in the stratosphere over the past two decades
matches the rise in the amount of fluorine over the same period
B. volcanoes do not contain the highest concentrations of chlorine in the stratosphere
C. oceans have chlorine molecules rising with the water molecules of evaporation
D. more pools are being installed every day - CORRECT ANSWER-C
A refrigerant cylinder that has a gray body and a yellow top indicates the cylinder is designed to
hold
A. acetylene
B.nitrogen
C. only refrigerant R-143a
D. recovered refrigerant - CORRECT ANSWER-D
When corrosion buildup is found wi
thin the body of a relief valve,the valve must be.
A.repaired
B. reconditioned
C.cleaned
D.replaced - CORRECT ANSWER-D
EPA regulations require the installation of a service aperture or process stub on all appliances
using Class I or Class Il refrigerants for.
, A.recovering refrigerants
B.checking for open motor windings
C.venting noncondensables
D.dehydrating the system - CORRECT ANSWER-A
On a typical gauge manifold set,the low-pressure gauge is color-coded.
A.green
B.yellow
C.blue
D.red - CORRECT ANSWER-C
The synthetic lubricants presently used with HCFC ternary blends are lubricants.
A.alkylbenzene
B.glycol
C.ester
D.whale oil - CORRECT ANSWER-A
Measuring system vacuum is accomplished with_.
A.the vacuum pump on
B.the vacuum pump off
C.the system heated
D.a gauge as close as possible to the vacuum pump - CORRECT ANSWER-B
Reusable containers for refrigerants that are under high pressure(above 15 psi)at normal ambient
temperature must be hydrostatically tested and date stamped every years.
A.1
B.2
C.5
D.10 - CORRECT ANSWER-C
When recovering refrigerant,it is important not to mix different refrigerants in the same container
2025/2026 WITH 150 ACTUAL EXAM QUESTIONS
AND CORRECT ANSWERS/ REAL NCCCO CORE
EXAM 2025 (BRAND NEW!!)
• 150 authentic exam questions with verified correct answers
• Aligned with 2025–2026 NCCCO exam standards
• Covers safety, load handling, OSHA, and site hazard awareness
• Designed for Core Certification candidates
• Latest and most reliable prep resource
1. are fluorocarbon refrigerants that cause no harm to stratospheric ozone.
A.CFCS
B.HCFCS
C.HFCs
D.HalonsTM - CORRECT ANSWER-C
2. The Clean Air Act_.
A. calls for the phaseout of PFC refrigerant production
B. requires that all leaks be fixed within 30 days
C. requires OSHA to set standards for the recovery of refrigerants prior to appliance disposal
D.prohibits CFC/HCFC venting as of July 1,1992 - CORRECT ANSWER-D
3. Refrigerant is the type of contamination that is the most difficult for a reclaiming facility to
eliminate.
A. with air
B. with moisture
C. from an acid burnout
D. containing particulate contaminants - CORRECT ANSWER-C
, is a CFC refrigerant.
A.R-134a
B.R-123
C.R-22
D.R-12 - CORRECT ANSWER-D
Chlorine in the stratosphere is believed to come primarily from CFCs rather than natural sources
such as volcanoes because_.
A. the rise in the amount of chlorine measured in the stratosphere over the past two decades
matches the rise in the amount of fluorine over the same period
B. volcanoes do not contain the highest concentrations of chlorine in the stratosphere
C. oceans have chlorine molecules rising with the water molecules of evaporation
D. more pools are being installed every day - CORRECT ANSWER-C
A refrigerant cylinder that has a gray body and a yellow top indicates the cylinder is designed to
hold
A. acetylene
B.nitrogen
C. only refrigerant R-143a
D. recovered refrigerant - CORRECT ANSWER-D
When corrosion buildup is found wi
thin the body of a relief valve,the valve must be.
A.repaired
B. reconditioned
C.cleaned
D.replaced - CORRECT ANSWER-D
EPA regulations require the installation of a service aperture or process stub on all appliances
using Class I or Class Il refrigerants for.
, A.recovering refrigerants
B.checking for open motor windings
C.venting noncondensables
D.dehydrating the system - CORRECT ANSWER-A
On a typical gauge manifold set,the low-pressure gauge is color-coded.
A.green
B.yellow
C.blue
D.red - CORRECT ANSWER-C
The synthetic lubricants presently used with HCFC ternary blends are lubricants.
A.alkylbenzene
B.glycol
C.ester
D.whale oil - CORRECT ANSWER-A
Measuring system vacuum is accomplished with_.
A.the vacuum pump on
B.the vacuum pump off
C.the system heated
D.a gauge as close as possible to the vacuum pump - CORRECT ANSWER-B
Reusable containers for refrigerants that are under high pressure(above 15 psi)at normal ambient
temperature must be hydrostatically tested and date stamped every years.
A.1
B.2
C.5
D.10 - CORRECT ANSWER-C
When recovering refrigerant,it is important not to mix different refrigerants in the same container
