EPA 608 CERTIFICATION EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS | LATEST VERSION (2026)
EXPERT VERIFIED
1. What date was the sale of CFCs & HCFCs restricted to technicians certified in refrigerant
recovery?
A. November 14, 1992
B. November 15, 1993
C. November 14, 1994
D. December 31, 1995
Correct Answer: C. November 14, 1994
Rationale: The Clean Air Act required that only technicians certified in refrigerant recovery could
purchase CFCs and HCFCs starting on this date. This measure ensured that only trained personnel
handled ozone-depleting substances, reducing environmental harm.
2. Section 608 of the Federal Clean Air Act requires technicians to what?
A. Only monitor refrigerant levels
B. Recover all refrigerants
C. Use any type of refrigerant
D. Only service small appliances
Correct Answer: B. Recover all refrigerants
Rationale: Section 608 mandates that all refrigerants must be recovered during servicing, recycling,
or disposal. This prevents harmful ozone-depleting chemicals from entering the atmosphere.
,3. The objective of the Clean Air Act is to protect what?
A. Water quality
B. Soil integrity
C. The earth’s stratosphere
D. Wildlife habitats
Correct Answer: C. The earth’s stratosphere
Rationale: The Clean Air Act aims to reduce emissions that harm the ozone layer in the
stratosphere. Protecting the stratosphere helps prevent increased UV radiation, which can cause
skin cancer and other environmental issues.
4. HFCs
A. HydroFluoroCarbon’s
B. HydroChloroFluoroCarbons
C. ChloroFluoroCarbons
D. HydroCarbon Fluoride
Correct Answer: A. HydroFluoroCarbon’s
Rationale: HFCs are synthetic compounds containing hydrogen, fluorine, and carbon. Unlike CFCs
or HCFCs, they do not contain chlorine and therefore do not directly deplete the ozone layer.
5. CFCs
A. HydroFluoroCarbon’s
B. ChloroFluoroCarbon’s
C. HydroChloroFluoroCarbons
D. Carbon Fluoride
,Correct Answer: B. ChloroFluoroCarbon’s
Rationale: CFCs contain chlorine, fluorine, and carbon. Chlorine atoms released from CFCs in the
stratosphere destroy ozone molecules, which is why their production and use are heavily regulated.
6. ODP
A. Ozone Depletion Potential
B. Organic Depletion Process
C. Ozone Density Parameter
D. Oxygen Depletion Percent
Correct Answer: A. Ozone Depletion Potential
Rationale: ODP measures a substance’s ability to destroy ozone in the stratosphere compared to a
reference compound. CFCs have high ODP values, making them highly harmful to the ozone layer.
7. Which international treaty agreement was the basis for Section 608?
A. Kyoto Protocol
B. Montreal Protocol
C. Paris Agreement
D. Basel Convention
Correct Answer: B. The Montreal Protocol
Rationale: The Montreal Protocol, signed in 1987, set international guidelines for phasing out
ozone-depleting substances. Section 608 of the U.S. Clean Air Act implements these regulations
nationally.
, 8. Depletion of the ozone in the stratosphere is known to cause which of the following?
A. Crop losses
B. Increases in eye diseases
C. Skin cancer
D. Reduced marine life
E. Deforestation
F. Increased ground-level ozone
G. All of the above
Correct Answer: G. All of the above
Rationale: Ozone depletion allows more UV radiation to reach Earth, leading to harmful
environmental and health effects. These include reduced crop yields, eye diseases, skin cancers,
marine ecosystem damage, and increased ground-level ozone.
9. What happens when CFC or HCFC molecules get in the stratosphere and free chlorine atoms are
set free?
A. They form harmless oxygen molecules
B. Chlorine atoms destroy ozone molecules
C. They convert to water vapor
D. They combine to form HFCs
Correct Answer: B. Chlorine atoms destroy ozone molecules
Rationale: Chlorine acts as a catalyst in ozone destruction, forming chlorine monoxide (ClO) and
oxygen. A single chlorine atom can destroy up to 100,000 ozone molecules, highlighting the
danger of CFCs and HCFCs.
10. What date was recovery equipment required to be certified by a lab and achieve higher
evacuation levels with low-loss fittings?
A. November 14, 1994
B. November 15, 1993
QUESTIONS WITH 100% CORRECT
ANSWERS | LATEST VERSION (2026)
EXPERT VERIFIED
1. What date was the sale of CFCs & HCFCs restricted to technicians certified in refrigerant
recovery?
A. November 14, 1992
B. November 15, 1993
C. November 14, 1994
D. December 31, 1995
Correct Answer: C. November 14, 1994
Rationale: The Clean Air Act required that only technicians certified in refrigerant recovery could
purchase CFCs and HCFCs starting on this date. This measure ensured that only trained personnel
handled ozone-depleting substances, reducing environmental harm.
2. Section 608 of the Federal Clean Air Act requires technicians to what?
A. Only monitor refrigerant levels
B. Recover all refrigerants
C. Use any type of refrigerant
D. Only service small appliances
Correct Answer: B. Recover all refrigerants
Rationale: Section 608 mandates that all refrigerants must be recovered during servicing, recycling,
or disposal. This prevents harmful ozone-depleting chemicals from entering the atmosphere.
,3. The objective of the Clean Air Act is to protect what?
A. Water quality
B. Soil integrity
C. The earth’s stratosphere
D. Wildlife habitats
Correct Answer: C. The earth’s stratosphere
Rationale: The Clean Air Act aims to reduce emissions that harm the ozone layer in the
stratosphere. Protecting the stratosphere helps prevent increased UV radiation, which can cause
skin cancer and other environmental issues.
4. HFCs
A. HydroFluoroCarbon’s
B. HydroChloroFluoroCarbons
C. ChloroFluoroCarbons
D. HydroCarbon Fluoride
Correct Answer: A. HydroFluoroCarbon’s
Rationale: HFCs are synthetic compounds containing hydrogen, fluorine, and carbon. Unlike CFCs
or HCFCs, they do not contain chlorine and therefore do not directly deplete the ozone layer.
5. CFCs
A. HydroFluoroCarbon’s
B. ChloroFluoroCarbon’s
C. HydroChloroFluoroCarbons
D. Carbon Fluoride
,Correct Answer: B. ChloroFluoroCarbon’s
Rationale: CFCs contain chlorine, fluorine, and carbon. Chlorine atoms released from CFCs in the
stratosphere destroy ozone molecules, which is why their production and use are heavily regulated.
6. ODP
A. Ozone Depletion Potential
B. Organic Depletion Process
C. Ozone Density Parameter
D. Oxygen Depletion Percent
Correct Answer: A. Ozone Depletion Potential
Rationale: ODP measures a substance’s ability to destroy ozone in the stratosphere compared to a
reference compound. CFCs have high ODP values, making them highly harmful to the ozone layer.
7. Which international treaty agreement was the basis for Section 608?
A. Kyoto Protocol
B. Montreal Protocol
C. Paris Agreement
D. Basel Convention
Correct Answer: B. The Montreal Protocol
Rationale: The Montreal Protocol, signed in 1987, set international guidelines for phasing out
ozone-depleting substances. Section 608 of the U.S. Clean Air Act implements these regulations
nationally.
, 8. Depletion of the ozone in the stratosphere is known to cause which of the following?
A. Crop losses
B. Increases in eye diseases
C. Skin cancer
D. Reduced marine life
E. Deforestation
F. Increased ground-level ozone
G. All of the above
Correct Answer: G. All of the above
Rationale: Ozone depletion allows more UV radiation to reach Earth, leading to harmful
environmental and health effects. These include reduced crop yields, eye diseases, skin cancers,
marine ecosystem damage, and increased ground-level ozone.
9. What happens when CFC or HCFC molecules get in the stratosphere and free chlorine atoms are
set free?
A. They form harmless oxygen molecules
B. Chlorine atoms destroy ozone molecules
C. They convert to water vapor
D. They combine to form HFCs
Correct Answer: B. Chlorine atoms destroy ozone molecules
Rationale: Chlorine acts as a catalyst in ozone destruction, forming chlorine monoxide (ClO) and
oxygen. A single chlorine atom can destroy up to 100,000 ozone molecules, highlighting the
danger of CFCs and HCFCs.
10. What date was recovery equipment required to be certified by a lab and achieve higher
evacuation levels with low-loss fittings?
A. November 14, 1994
B. November 15, 1993
