EPA-
608 Core Certification Exam Practice Ques
d d d d d
tions And Correct Answers (Verified Answ
d d d d d
ers) Plus Rationales 2026|2027 Q&A | Inst
d d d d d d
ant Download Pdf
d d
1. Which of the following is a major type of ozone-depleting substance?
d d d d d d d d d d d
a. Hydrocarbons
b. Chlorofluorocarbons (CFCs) d
c. Nitrogen oxides d
d. Carbon dioxide d
Rationale: CFCs are the primary ozone-
d d d d d
depleting substances regulated under the Montreal Protocol.
d d d d d d
2. Which class of refrigerants includes CFC-12?
d d d d d
a. Class I d
b. Class I d
c. Class II d
d. Class III d
, Rationale: Class I refrigerants, including CFCs, are known for their high
d d d d d d d d d d
dozone depletion potential.
d d
3. What is the main environmental concern with refrigerant leaks?
d d d d d d d d
a. Global warming only d d
b. Water pollution d
c. Ozone depletion d
d. Soil contamination
d
Rationale: Refrigerant leaks, especially CFCs and HCFCs, deplete the o
d d d d d d d d d
zone layer, which protects life from UV radiation.
d d d d d d d
4. Under EPA regulations, what must technicians do before opening an
d d d d d d d d d d
appliance for service? d d
a. Replace the compressor d d
b. Recover the refrigerant d d
c. Dispose of the appliance d d d
d. Add oil to the system
d d d d
Rationale: Technicians are required to recover refrigerants to prevent t
d d d d d d d d d
heir release into the atmosphere.
d d d d
5. Which of the following is considered an acceptable method of r
d d d d d d d d d d
efrigerant recovery? d
a. Venting to the atmosphere d d d
b. Using EPA-approved recovery equipment
d d d
c. Burning refrigerant d
d. Dissolving in water d d
, Rationale: Only certified recovery equipment is legal and safe for capt
d d d d d d d d d d
uring refrigerants.
d
6. What type of recovery is required when the compressor is to be r
d d d d d d d d d d d d
emoved from a small appliance?
d d d d
a. Passive recovery d
b. No recovery needed
d d
c. Active recovery d
d. Pumping with a vacuum d d d
Rationale: Active recovery ensures the refrigerant is safely removed b
d d d d d d d d d
efore the appliance is opened.
d d d d
7. Which refrigerant has the highest ozone depletion potential?
d d d d d d d
a. HCFC-22
b. HFC-134a
c. CFC-12
d. R-410A
Rationale: CFCs have the highest ODP compared to HCFCs and HFCs.
d d d d d d d d d d
8. What is the safe disposal method for appliances containing CFCs?
d d d d d d d d d
a. Dump in landfill
d d
b. Recover refrigerant and recycle or destroy
d d d d d
c. Burn the appliance
d d
d. Vent refrigerant into the air
d d d d
Rationale: The EPA mandates recovery of ozone-
d d d d d d
depleting refrigerants before disposal.
d d d
, 9. Which of the following is an acceptable leak repair method?
d d d d d d d d d
a. Using sealant without fixing the leak
d d d d d
b. Soldering or brazing the leak d d d d
c. Leaving the leak for later d d d d
d. Venting refrigerant d
Rationale: Mechanical repairs like brazing effectively seal leaks; seala
d d d d d d d d
nts alone are not recommended.
d d d d
10. Which refrigerant is considered a “drop-in” replacement for R-
d d d d d d d d
12?
a. R-410A
b. R-22
c. R-134a
d. R-407C
Rationale: R-134a can be used as a retrofit replacement for R-
d d d d d d d d d d
12 in some systems.
d d d
11. What does the term “reclaim” mean regarding refrigerants?
d d d d d d d
a. Use refrigerant without processing
d d d
b. Vent refrigerant d
c. Process refrigerant to meet industry standards
d d d d d
d. Dispose of refrigerant in water d d d d
Rationale: Reclaimed refrigerant is processed to meet purity standard
d d d d d d d d
s and can be reused.
d d d d
608 Core Certification Exam Practice Ques
d d d d d
tions And Correct Answers (Verified Answ
d d d d d
ers) Plus Rationales 2026|2027 Q&A | Inst
d d d d d d
ant Download Pdf
d d
1. Which of the following is a major type of ozone-depleting substance?
d d d d d d d d d d d
a. Hydrocarbons
b. Chlorofluorocarbons (CFCs) d
c. Nitrogen oxides d
d. Carbon dioxide d
Rationale: CFCs are the primary ozone-
d d d d d
depleting substances regulated under the Montreal Protocol.
d d d d d d
2. Which class of refrigerants includes CFC-12?
d d d d d
a. Class I d
b. Class I d
c. Class II d
d. Class III d
, Rationale: Class I refrigerants, including CFCs, are known for their high
d d d d d d d d d d
dozone depletion potential.
d d
3. What is the main environmental concern with refrigerant leaks?
d d d d d d d d
a. Global warming only d d
b. Water pollution d
c. Ozone depletion d
d. Soil contamination
d
Rationale: Refrigerant leaks, especially CFCs and HCFCs, deplete the o
d d d d d d d d d
zone layer, which protects life from UV radiation.
d d d d d d d
4. Under EPA regulations, what must technicians do before opening an
d d d d d d d d d d
appliance for service? d d
a. Replace the compressor d d
b. Recover the refrigerant d d
c. Dispose of the appliance d d d
d. Add oil to the system
d d d d
Rationale: Technicians are required to recover refrigerants to prevent t
d d d d d d d d d
heir release into the atmosphere.
d d d d
5. Which of the following is considered an acceptable method of r
d d d d d d d d d d
efrigerant recovery? d
a. Venting to the atmosphere d d d
b. Using EPA-approved recovery equipment
d d d
c. Burning refrigerant d
d. Dissolving in water d d
, Rationale: Only certified recovery equipment is legal and safe for capt
d d d d d d d d d d
uring refrigerants.
d
6. What type of recovery is required when the compressor is to be r
d d d d d d d d d d d d
emoved from a small appliance?
d d d d
a. Passive recovery d
b. No recovery needed
d d
c. Active recovery d
d. Pumping with a vacuum d d d
Rationale: Active recovery ensures the refrigerant is safely removed b
d d d d d d d d d
efore the appliance is opened.
d d d d
7. Which refrigerant has the highest ozone depletion potential?
d d d d d d d
a. HCFC-22
b. HFC-134a
c. CFC-12
d. R-410A
Rationale: CFCs have the highest ODP compared to HCFCs and HFCs.
d d d d d d d d d d
8. What is the safe disposal method for appliances containing CFCs?
d d d d d d d d d
a. Dump in landfill
d d
b. Recover refrigerant and recycle or destroy
d d d d d
c. Burn the appliance
d d
d. Vent refrigerant into the air
d d d d
Rationale: The EPA mandates recovery of ozone-
d d d d d d
depleting refrigerants before disposal.
d d d
, 9. Which of the following is an acceptable leak repair method?
d d d d d d d d d
a. Using sealant without fixing the leak
d d d d d
b. Soldering or brazing the leak d d d d
c. Leaving the leak for later d d d d
d. Venting refrigerant d
Rationale: Mechanical repairs like brazing effectively seal leaks; seala
d d d d d d d d
nts alone are not recommended.
d d d d
10. Which refrigerant is considered a “drop-in” replacement for R-
d d d d d d d d
12?
a. R-410A
b. R-22
c. R-134a
d. R-407C
Rationale: R-134a can be used as a retrofit replacement for R-
d d d d d d d d d d
12 in some systems.
d d d
11. What does the term “reclaim” mean regarding refrigerants?
d d d d d d d
a. Use refrigerant without processing
d d d
b. Vent refrigerant d
c. Process refrigerant to meet industry standards
d d d d d
d. Dispose of refrigerant in water d d d d
Rationale: Reclaimed refrigerant is processed to meet purity standard
d d d d d d d d
s and can be reused.
d d d d
