Page 1 of 137
Skillcat EPA 608 Newly Updated 2026/27
Exam Questions & Answers, 100%
Guaranteed Pass ||Complete A+ Guide
1. What chemical element in CFCs destroys stratospheric
ozone?
A) Fluorine
B) Carbon
C) Chlorine
D) Hydrogen
Answer: C – Chlorine atoms catalyze ozone breakdown. One
chlorine atom destroys ~100,000 ozone molecules.
2. Which international treaty phased out CFCs and HCFCs?
A) Kyoto Protocol
B) Paris Agreement
C) Montreal Protocol
,Page 2 of 137
D) Clean Air Act
Answer: C – Montreal Protocol (1987) is global; US Clean Air
Act enforces it.
3. Which refrigerant has the highest Ozone Depletion
Potential (ODP)?
A) R-410A
B) R-134a
C) R-12
D) R-1234yf
Answer: C – R-12 (CFC) ODP = 1.0. R-410A and R-134a
have 0 ODP.
4. What is the ODP of R-22 (HCFC)?
A) 0
B) 0.055
C) 0.5
D) 1.0
,Page 3 of 137
Answer: B – R-22 ODP = 0.055. Production of new R-22
stopped in 2020.
5. Global Warming Potential (GWP) of R-404A is
approximately:
A) 1
B) 392
C) 1,430
D) 3,922
Answer: D – R-404A GWP ~3,922 (high-GWP HFC). Being
phased down under AIM Act.
6. Which refrigerant is a low-GWP HFO?
A) R-134a
B) R-1234yf
C) R-22
D) R-502
Answer: B – R-1234yf GWP <1. Used in automotive and
stationary AC.
, Page 4 of 137
7. Under Section 608, releasing any refrigerant while
servicing is legal if:
A) System is small
B) Refrigerant is non-ozone depleting
C) Never legal – must recover
D) System is leaking
Answer: C – Venting any refrigerant (CFC, HCFC, HFC, HFO)
is illegal. Must recover.
8. EPA's SNAP program does what?
A) Lists acceptable/unacceptable substitutes
B) Sets recovery cylinder colors
C) Certifies technicians
D) Tests leak detectors
Answer: A – SNAP (Significant New Alternatives Policy)
evaluates refrigerant substitutes.
9. What year did production of R-12 cease in developed
countries?
Skillcat EPA 608 Newly Updated 2026/27
Exam Questions & Answers, 100%
Guaranteed Pass ||Complete A+ Guide
1. What chemical element in CFCs destroys stratospheric
ozone?
A) Fluorine
B) Carbon
C) Chlorine
D) Hydrogen
Answer: C – Chlorine atoms catalyze ozone breakdown. One
chlorine atom destroys ~100,000 ozone molecules.
2. Which international treaty phased out CFCs and HCFCs?
A) Kyoto Protocol
B) Paris Agreement
C) Montreal Protocol
,Page 2 of 137
D) Clean Air Act
Answer: C – Montreal Protocol (1987) is global; US Clean Air
Act enforces it.
3. Which refrigerant has the highest Ozone Depletion
Potential (ODP)?
A) R-410A
B) R-134a
C) R-12
D) R-1234yf
Answer: C – R-12 (CFC) ODP = 1.0. R-410A and R-134a
have 0 ODP.
4. What is the ODP of R-22 (HCFC)?
A) 0
B) 0.055
C) 0.5
D) 1.0
,Page 3 of 137
Answer: B – R-22 ODP = 0.055. Production of new R-22
stopped in 2020.
5. Global Warming Potential (GWP) of R-404A is
approximately:
A) 1
B) 392
C) 1,430
D) 3,922
Answer: D – R-404A GWP ~3,922 (high-GWP HFC). Being
phased down under AIM Act.
6. Which refrigerant is a low-GWP HFO?
A) R-134a
B) R-1234yf
C) R-22
D) R-502
Answer: B – R-1234yf GWP <1. Used in automotive and
stationary AC.
, Page 4 of 137
7. Under Section 608, releasing any refrigerant while
servicing is legal if:
A) System is small
B) Refrigerant is non-ozone depleting
C) Never legal – must recover
D) System is leaking
Answer: C – Venting any refrigerant (CFC, HCFC, HFC, HFO)
is illegal. Must recover.
8. EPA's SNAP program does what?
A) Lists acceptable/unacceptable substitutes
B) Sets recovery cylinder colors
C) Certifies technicians
D) Tests leak detectors
Answer: A – SNAP (Significant New Alternatives Policy)
evaluates refrigerant substitutes.
9. What year did production of R-12 cease in developed
countries?
