EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
Manufacture of CFCs was banned as of December 31, _______?
A) 1994
B) 1995
C) 2000
D) 2010 - ANSWER-1995
Positive evidence that CFCs are in the stratosphere comes from
____________? - ANSWER-Measurements of CFCs in air samples taken
from the stratosphere
Under EPAs regulations reclaimed refrigerant must meet standards for
purity before it can be resold - ANSWER-ARI 700
________recovery devices are so named because they depend on
components of the system. That is, they capture refrigerant with the
assistance of components in the air conditioning or refrigeration equipment
they are emptying - ANSWER-System-dependent
All devices used for refrigerant recovery must meet___________standards.
- ANSWER-EPA
An example of an HCFC refrigerant: - ANSWER-R-22
Which of the refrigerants listed below contain no chlorine?
A) CFCs
,EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
B)HCFCs
C) HFCs
D) ODCs - ANSWER-HFCs
Which refrigerant is an HFC?
A) R-123
B) R- 134a
C) R- 11
D) R- 22 - ANSWER-R-134a
Ozone in the stratosphere consist of molecules containing _________
oxygen atoms. - ANSWER-Three
_____ in refrigerants causes ozone destruction. - ANSWER-Chlorine
Recovery devices that can capture liquid and/ or vapor refrigerant without
the assistance of components in the air conditioning or refrigerant
equipment are known as _____. - ANSWER-Self-contained
Technicians are certified to recover refrigerant during the maintenance,
service, or repair of packaged A/C or refrigeration equipment with five
pounds or less of refrigerant if they receive a passing grade on
__________ examinations. - ANSWER-Type 1
Technicians are certified to recover refrigerant during the maintenance,
service, or repair of high-pressure equipment if they receive a passing
,EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
grade on which of the following examinations? - ANSWER-Type 2 (high
pressure certificate)
______ refrigerants leak at uneven rates due to the differences in the vapor
pressures. - ANSWER-Blended
When evacuating a system, the hoses should be: - ANSWER-Equal to or
larger than vacuum pump inlet connection
When moisture exist in an operating system, which of the following is the
most likely to occur? - ANSWER-Acid will form
The size (capacity) of the vacuum pump and the size of the suction line
used will determine: - ANSWER-The length of dehydration time
To obtain an accurate vacuum reading during system evacuation, the
system vacuum gauge should be located: - ANSWER-As far from the
vacuum pump as possible
What factors affects the speed of evacuation? - ANSWER--) the size of the
equipment being evacuated
-) the ambient temperature
-) the amount of moisture in the system
A system is dehydrated to: - ANSWER-Remove water and water vapor
, EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
Containers designated "refillable" by DOT are used for transporting
recovered pressurized refrigerant ________? - ANSWER-To meet safety
requirements
A fillable refrigerant cylinder must never be filled to more than ______ of its
capacity by weight: - ANSWER-80%
A cylinder with grey body and a yellow top indicates that the cylinder is
designated to hold: - ANSWER-Recovered refrigerant
Refrigerant vapors or mist should not be inhaled because: - ANSWER-
They may cause heart irregularities and or unconsciousness
If corrosion is found within the body of a relief valve, the valve must be: -
ANSWER-replaced.
After refrigerant liquid transfer between recovery unit and the system being
emptied, you need to avoid trapping: - ANSWER-liquid refrigerant between
service valves.
When using nitrogen to pressurize a system, you should: - ANSWER-only
charge with nitrogen vapor.
What effects can ozone depletion have on the environment? - ANSWER-
reduced crop yields
reduced marine life
increased ground-level ozone
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
Manufacture of CFCs was banned as of December 31, _______?
A) 1994
B) 1995
C) 2000
D) 2010 - ANSWER-1995
Positive evidence that CFCs are in the stratosphere comes from
____________? - ANSWER-Measurements of CFCs in air samples taken
from the stratosphere
Under EPAs regulations reclaimed refrigerant must meet standards for
purity before it can be resold - ANSWER-ARI 700
________recovery devices are so named because they depend on
components of the system. That is, they capture refrigerant with the
assistance of components in the air conditioning or refrigeration equipment
they are emptying - ANSWER-System-dependent
All devices used for refrigerant recovery must meet___________standards.
- ANSWER-EPA
An example of an HCFC refrigerant: - ANSWER-R-22
Which of the refrigerants listed below contain no chlorine?
A) CFCs
,EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
B)HCFCs
C) HFCs
D) ODCs - ANSWER-HFCs
Which refrigerant is an HFC?
A) R-123
B) R- 134a
C) R- 11
D) R- 22 - ANSWER-R-134a
Ozone in the stratosphere consist of molecules containing _________
oxygen atoms. - ANSWER-Three
_____ in refrigerants causes ozone destruction. - ANSWER-Chlorine
Recovery devices that can capture liquid and/ or vapor refrigerant without
the assistance of components in the air conditioning or refrigerant
equipment are known as _____. - ANSWER-Self-contained
Technicians are certified to recover refrigerant during the maintenance,
service, or repair of packaged A/C or refrigeration equipment with five
pounds or less of refrigerant if they receive a passing grade on
__________ examinations. - ANSWER-Type 1
Technicians are certified to recover refrigerant during the maintenance,
service, or repair of high-pressure equipment if they receive a passing
,EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
grade on which of the following examinations? - ANSWER-Type 2 (high
pressure certificate)
______ refrigerants leak at uneven rates due to the differences in the vapor
pressures. - ANSWER-Blended
When evacuating a system, the hoses should be: - ANSWER-Equal to or
larger than vacuum pump inlet connection
When moisture exist in an operating system, which of the following is the
most likely to occur? - ANSWER-Acid will form
The size (capacity) of the vacuum pump and the size of the suction line
used will determine: - ANSWER-The length of dehydration time
To obtain an accurate vacuum reading during system evacuation, the
system vacuum gauge should be located: - ANSWER-As far from the
vacuum pump as possible
What factors affects the speed of evacuation? - ANSWER--) the size of the
equipment being evacuated
-) the ambient temperature
-) the amount of moisture in the system
A system is dehydrated to: - ANSWER-Remove water and water vapor
, EPA 608 CORE EXAM 2023-2024 ACTUAL EXAM ALL
295 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED ANSWERS)
|ALREADY GRADED A+
Containers designated "refillable" by DOT are used for transporting
recovered pressurized refrigerant ________? - ANSWER-To meet safety
requirements
A fillable refrigerant cylinder must never be filled to more than ______ of its
capacity by weight: - ANSWER-80%
A cylinder with grey body and a yellow top indicates that the cylinder is
designated to hold: - ANSWER-Recovered refrigerant
Refrigerant vapors or mist should not be inhaled because: - ANSWER-
They may cause heart irregularities and or unconsciousness
If corrosion is found within the body of a relief valve, the valve must be: -
ANSWER-replaced.
After refrigerant liquid transfer between recovery unit and the system being
emptied, you need to avoid trapping: - ANSWER-liquid refrigerant between
service valves.
When using nitrogen to pressurize a system, you should: - ANSWER-only
charge with nitrogen vapor.
What effects can ozone depletion have on the environment? - ANSWER-
reduced crop yields
reduced marine life
increased ground-level ozone
