EPA 608 CERTIFICATION EXAM 2025 WITH
ACCURATE SOLUTIONS
Ozone stratosphere above the earth consists of molecules containing... - ✅✅✅CORRECT -3 oxygen
atoms (O3)
The oxygen we breathe contains how many atoms in each molecule? - ✅✅✅CORRECT -two atoms
(O2)
The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the
earth - ✅✅✅CORRECT -7 and 28 miles
the ozone layer is formed by what? - ✅✅✅CORRECT -Ultra violet light from the sun acting on oxygen
molecules,absorbs and scatter UV light from the sun
What does the Ozone layer do? - ✅✅✅CORRECT -prevents harmful amounts of UV light from
reaching Earth.
What is another name for the ozone layer? - ✅✅✅CORRECT -ozone shield
Ozone in the lower atmosphere where we breathe is caused by what? - ✅✅✅CORRECT -UV
radiation from the sun acting on smog and air pollutants
Ozone at ground level is what? - ✅✅✅CORRECT -Harmful pollutant
Ozone in the stratosphere is what? - ✅✅✅CORRECT -Protective Shield
The ability of a substance to destroy ozone in the stratosphere is referred to as the what? -
✅✅✅CORRECT -Ozone depletion potential (ODP)
,Chlorine in refrigerants causes what? - ✅✅✅CORRECT -stratospheric ozone depletion
The rise in the amount of chlorine measured in the stratosphere matches what? - ✅✅✅CORRECT -
The rise in ozone-depleting emissions of CFC's and HCFC's over the same period
According to the Roland-Molina Theory how many ozone molecules are destroyed by each chlorine
atom? - ✅✅✅CORRECT -100,000
What happens when ozone depletion occurs? - ✅✅✅CORRECT -More UV radiation penetrates to the
earths surface.
The rise in the amount of chlorine measured in the stratosphere over the same time matches what? -
✅✅✅CORRECT -The amount of fluorine
The chlorine in the stratosphere is believed to come primarily from what? - ✅✅✅CORRECT -CFC's &
HCFC's
Stratospheric ozone protection is a - ✅✅✅CORRECT -global problem
What is the Montreal Protocol? - ✅✅✅CORRECT -and international treaty that addresses limiting
ozone depleting substances.
Increased concentration in the stratosphere of chlorine and bromine pose what? - ✅✅✅CORRECT -
substantial risks of ozone depletion
The Ozone layer - ✅✅✅CORRECT -protects Earth from harmful ultraviolet rays
What are some side effects of increased UV radiation? - ✅✅✅CORRECT -Skin Cancer, cataracts,
suppression of immune system, reduced crop yields, damage to marine life, increased degradation of
polymers, climate change
, What is the SNAP Program? - ✅✅✅CORRECT -The Significant New Alternatives Policy identifies
refrigerants with lower overall risks to human health and the environment.
Technicians who violate the Clean Air Act provisions can be - ✅✅✅CORRECT -fined up to $44,539
per day per violation, lose their certification, and face federal charges
Knowingly releasing refrigerants during the service, maintenance, repair or disposal of appliances is... -
✅✅✅CORRECT -illegal
Chlorofluorocarbons (CFCs) contain what elements? - ✅✅✅CORRECT -chlorine, fluorine, carbon
Which refrigerants have the highest ODP - ✅✅✅CORRECT -CFC's
What makes CFC's chemically stable? - ✅✅✅CORRECT -They contain no hydrogen
What makes CFC's damaging to the ozone? - ✅✅✅CORRECT -They contain chlorine
What do CFC's & HCFC's do in water? - ✅✅✅CORRECT -They do not dissolve or breakdown
What were some commonly used CFC's before being banned? - ✅✅✅CORRECT -R-11 & R-12
Hydrochloroflurocarbons (HCFCs) contain what elements? - ✅✅✅CORRECT -Hydrogen, chlorine,
fluorine, carbon
What makes HCFC's less damaging to the environment than CFC's? - ✅✅✅CORRECT -They contain
hydrogen which makes them less stable and decompose faster
What are some common HCFC's?? - ✅✅✅CORRECT -R-22, R-123, R-124
Hydrofluorocarbon (HFC) refrigerants contain which elements? - ✅✅✅CORRECT -hydrogen, fluorine,
carbon
ACCURATE SOLUTIONS
Ozone stratosphere above the earth consists of molecules containing... - ✅✅✅CORRECT -3 oxygen
atoms (O3)
The oxygen we breathe contains how many atoms in each molecule? - ✅✅✅CORRECT -two atoms
(O2)
The ozone layer consists of ozone in the stratosphere at an altitude of between __________above the
earth - ✅✅✅CORRECT -7 and 28 miles
the ozone layer is formed by what? - ✅✅✅CORRECT -Ultra violet light from the sun acting on oxygen
molecules,absorbs and scatter UV light from the sun
What does the Ozone layer do? - ✅✅✅CORRECT -prevents harmful amounts of UV light from
reaching Earth.
What is another name for the ozone layer? - ✅✅✅CORRECT -ozone shield
Ozone in the lower atmosphere where we breathe is caused by what? - ✅✅✅CORRECT -UV
radiation from the sun acting on smog and air pollutants
Ozone at ground level is what? - ✅✅✅CORRECT -Harmful pollutant
Ozone in the stratosphere is what? - ✅✅✅CORRECT -Protective Shield
The ability of a substance to destroy ozone in the stratosphere is referred to as the what? -
✅✅✅CORRECT -Ozone depletion potential (ODP)
,Chlorine in refrigerants causes what? - ✅✅✅CORRECT -stratospheric ozone depletion
The rise in the amount of chlorine measured in the stratosphere matches what? - ✅✅✅CORRECT -
The rise in ozone-depleting emissions of CFC's and HCFC's over the same period
According to the Roland-Molina Theory how many ozone molecules are destroyed by each chlorine
atom? - ✅✅✅CORRECT -100,000
What happens when ozone depletion occurs? - ✅✅✅CORRECT -More UV radiation penetrates to the
earths surface.
The rise in the amount of chlorine measured in the stratosphere over the same time matches what? -
✅✅✅CORRECT -The amount of fluorine
The chlorine in the stratosphere is believed to come primarily from what? - ✅✅✅CORRECT -CFC's &
HCFC's
Stratospheric ozone protection is a - ✅✅✅CORRECT -global problem
What is the Montreal Protocol? - ✅✅✅CORRECT -and international treaty that addresses limiting
ozone depleting substances.
Increased concentration in the stratosphere of chlorine and bromine pose what? - ✅✅✅CORRECT -
substantial risks of ozone depletion
The Ozone layer - ✅✅✅CORRECT -protects Earth from harmful ultraviolet rays
What are some side effects of increased UV radiation? - ✅✅✅CORRECT -Skin Cancer, cataracts,
suppression of immune system, reduced crop yields, damage to marine life, increased degradation of
polymers, climate change
, What is the SNAP Program? - ✅✅✅CORRECT -The Significant New Alternatives Policy identifies
refrigerants with lower overall risks to human health and the environment.
Technicians who violate the Clean Air Act provisions can be - ✅✅✅CORRECT -fined up to $44,539
per day per violation, lose their certification, and face federal charges
Knowingly releasing refrigerants during the service, maintenance, repair or disposal of appliances is... -
✅✅✅CORRECT -illegal
Chlorofluorocarbons (CFCs) contain what elements? - ✅✅✅CORRECT -chlorine, fluorine, carbon
Which refrigerants have the highest ODP - ✅✅✅CORRECT -CFC's
What makes CFC's chemically stable? - ✅✅✅CORRECT -They contain no hydrogen
What makes CFC's damaging to the ozone? - ✅✅✅CORRECT -They contain chlorine
What do CFC's & HCFC's do in water? - ✅✅✅CORRECT -They do not dissolve or breakdown
What were some commonly used CFC's before being banned? - ✅✅✅CORRECT -R-11 & R-12
Hydrochloroflurocarbons (HCFCs) contain what elements? - ✅✅✅CORRECT -Hydrogen, chlorine,
fluorine, carbon
What makes HCFC's less damaging to the environment than CFC's? - ✅✅✅CORRECT -They contain
hydrogen which makes them less stable and decompose faster
What are some common HCFC's?? - ✅✅✅CORRECT -R-22, R-123, R-124
Hydrofluorocarbon (HFC) refrigerants contain which elements? - ✅✅✅CORRECT -hydrogen, fluorine,
carbon
