EPA CERTIFICATION 2025 LATEST
EXAM QUESTIONS WITH CORRECT
DETAILED ANSWERS || A+ GRADE
ASSURED
< LATEST VERSION >
1. Which Refrigerants contain the most chlorine? - ANSWER 🗸 CFC's
2. As of what date did it become unlawful to intentionally release Class 1 and
Class 2 refrigerants to the atmosphere? - ANSWER 🗸 July 1, 1992
3. Which Refrigerants have the lowest zone depletion potential? - ANSWER 🗸
HFC's
4. The molecule found in CFC's and HCHC's refrigerants that destroys the
ozone in the stratosphere is: - ANSWER 🗸 Chlorine
5. Stratospheric ozone consists of: - ANSWER 🗸 Three oxygen atoms
,6. Stratospheric ozone depletion is a _________ problem: - ANSWER 🗸
Global
7. Which type of refrigerant is the mpst harmful to the stratosphere? -
ANSWER 🗸 cfcs
8. An example of a CFC refrigerant is: - ANSWER 🗸 R-12
9. Which of the following refrigerants contain chlorine? - ANSWER 🗸 R-22
10.What is the phaseout date for the production and import of nre R-22 in the
US? - ANSWER 🗸 2020
11.As of 2017, how much can a technocian be fined for violating the Clean Air
Act, including knowlingly releasing non-exempt refrigerant from
appliances? - ANSWER 🗸 $44,539 per day per violation
12.How should disposable cylinders of cfcs, hcfcs, and hfcs be discarded? -
ANSWER 🗸 Recover all remaining refrigerant, render the cylinders useless
and recycle the metal.
13.From which of the following does the ozone layer protect the earth? -
ANSWER 🗸 Ultraviolet radiation from the sun
14.Which human health effect increases from damage to the stratosphere ozone
layer? - ANSWER 🗸 Cases of cataracts
,15.What characteristic of HFC refrigerants make them damaging to the
environment? - ANSWER 🗸 They can have very high global warming
potentials
16.What is the state of the refrigerant entering the compressor of a refrigerant
system? - ANSWER 🗸 Low pressure vapor
17.Which of the following is a "high-pressure refrigerant" under EPA's section
608 regulations? - ANSWER 🗸 R-410A
18.What does ozone in the stratosphere above the earth consist of? - ANSWER
🗸 Molecules containing 3 oxygen atoms
19.Which element of CFC or HCFC molecule causes ozone depletion? -
ANSWER 🗸 Chlorine
20.What characteristic(s) of cfcs and hcfcs make them more likely to reach the
stratosphere than most other compounds containing chlorine? - ANSWER 🗸
They do not dissolve in water or easily break down in the atmosphere
21.How many ozone molecules can each chlorine atom in the stratosphere
destroy? - ANSWER 🗸 100,000 molecules
22.Which of the following are recommended safe work practices when
recovering refrigerants? - ANSWER 🗸 Wear safety eyewear and butyl-lined
gloves when connecting/disconnecting hoses
, 23.The system dependent (passive) recovery process. - ANSWER 🗸 Recovers
refrigerant in a non-pressurized container
24.Why should the technician watch for signs of contamination in the oil when
recovering refrigerant from a system that experienced a compressor burnout?
- ANSWER 🗸 The system will have to be flushed if contaminants are
present
25.Which of the following is required when attaching a gauge set to check
system pressures? - ANSWER 🗸 Have manual or self-sealing valves on the
ends of the gauge set hoses to minimize any release of refrigerant
26.How many access valves are needed to recover the refrigerant on a sealed
system with an operating compressor that has a completely restricted
capillary tube? - ANSWER 🗸 Only one access valve, on the high side of the
system
27.Which refrigerants can be mixed in an appliance? - ANSWER 🗸
Refrigerants cannot be mixed
28.After recovering refrigerant from a sealed system, if nitrogen is used to
pressurize or blow debris out of the system, the nitrogen... - ANSWER 🗸
May be vented to the ambient air
29.When a pungent ofor is detected during a sealed system recovery and/or
repair which of the following is most likely? - ANSWER 🗸 A compressor
burnout has occured
EXAM QUESTIONS WITH CORRECT
DETAILED ANSWERS || A+ GRADE
ASSURED
< LATEST VERSION >
1. Which Refrigerants contain the most chlorine? - ANSWER 🗸 CFC's
2. As of what date did it become unlawful to intentionally release Class 1 and
Class 2 refrigerants to the atmosphere? - ANSWER 🗸 July 1, 1992
3. Which Refrigerants have the lowest zone depletion potential? - ANSWER 🗸
HFC's
4. The molecule found in CFC's and HCHC's refrigerants that destroys the
ozone in the stratosphere is: - ANSWER 🗸 Chlorine
5. Stratospheric ozone consists of: - ANSWER 🗸 Three oxygen atoms
,6. Stratospheric ozone depletion is a _________ problem: - ANSWER 🗸
Global
7. Which type of refrigerant is the mpst harmful to the stratosphere? -
ANSWER 🗸 cfcs
8. An example of a CFC refrigerant is: - ANSWER 🗸 R-12
9. Which of the following refrigerants contain chlorine? - ANSWER 🗸 R-22
10.What is the phaseout date for the production and import of nre R-22 in the
US? - ANSWER 🗸 2020
11.As of 2017, how much can a technocian be fined for violating the Clean Air
Act, including knowlingly releasing non-exempt refrigerant from
appliances? - ANSWER 🗸 $44,539 per day per violation
12.How should disposable cylinders of cfcs, hcfcs, and hfcs be discarded? -
ANSWER 🗸 Recover all remaining refrigerant, render the cylinders useless
and recycle the metal.
13.From which of the following does the ozone layer protect the earth? -
ANSWER 🗸 Ultraviolet radiation from the sun
14.Which human health effect increases from damage to the stratosphere ozone
layer? - ANSWER 🗸 Cases of cataracts
,15.What characteristic of HFC refrigerants make them damaging to the
environment? - ANSWER 🗸 They can have very high global warming
potentials
16.What is the state of the refrigerant entering the compressor of a refrigerant
system? - ANSWER 🗸 Low pressure vapor
17.Which of the following is a "high-pressure refrigerant" under EPA's section
608 regulations? - ANSWER 🗸 R-410A
18.What does ozone in the stratosphere above the earth consist of? - ANSWER
🗸 Molecules containing 3 oxygen atoms
19.Which element of CFC or HCFC molecule causes ozone depletion? -
ANSWER 🗸 Chlorine
20.What characteristic(s) of cfcs and hcfcs make them more likely to reach the
stratosphere than most other compounds containing chlorine? - ANSWER 🗸
They do not dissolve in water or easily break down in the atmosphere
21.How many ozone molecules can each chlorine atom in the stratosphere
destroy? - ANSWER 🗸 100,000 molecules
22.Which of the following are recommended safe work practices when
recovering refrigerants? - ANSWER 🗸 Wear safety eyewear and butyl-lined
gloves when connecting/disconnecting hoses
, 23.The system dependent (passive) recovery process. - ANSWER 🗸 Recovers
refrigerant in a non-pressurized container
24.Why should the technician watch for signs of contamination in the oil when
recovering refrigerant from a system that experienced a compressor burnout?
- ANSWER 🗸 The system will have to be flushed if contaminants are
present
25.Which of the following is required when attaching a gauge set to check
system pressures? - ANSWER 🗸 Have manual or self-sealing valves on the
ends of the gauge set hoses to minimize any release of refrigerant
26.How many access valves are needed to recover the refrigerant on a sealed
system with an operating compressor that has a completely restricted
capillary tube? - ANSWER 🗸 Only one access valve, on the high side of the
system
27.Which refrigerants can be mixed in an appliance? - ANSWER 🗸
Refrigerants cannot be mixed
28.After recovering refrigerant from a sealed system, if nitrogen is used to
pressurize or blow debris out of the system, the nitrogen... - ANSWER 🗸
May be vented to the ambient air
29.When a pungent ofor is detected during a sealed system recovery and/or
repair which of the following is most likely? - ANSWER 🗸 A compressor
burnout has occured
