EPA 608 CORE Practice Tests 1 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
The EPA can require a technician to demonstrate the abilities to perform proper procedures for
recovering and/or recycling refrigerant. Failure to demonstrate competency can result in?
revocation of the technicians certification.
seizure of the technicians recovery/recycling equipment.
seizure of any refrigerant purchased by the technician that they still are in possession of.
mandatory attendance at refrigeration training boot camp where they will have to run in place for
8 hours/day while holding a manifold gauge set over their head. - CORRECT
ANSWER Revocation of the technicians certification.
What characteristic of CFC refrigerants make them more likely to reach the stratosphere than
most other compounds that contain chlorine?
Refrigerants such as CFCs that contain chlorine but not hydrogen are so stable that they do not
break down in the lower atmosphere. The chlorine (or bromine) only breaks down when it reacts
with the ozone molecules up higher in the stratosphere changing it to oxygen, thus breaking the
ozone layer down.
CFCs are lighter than other damaging compounds making them easier to float upward when
released.
CFCs are attracted to the static in the stratosphere.
CFCs are attracted to the dust in the stratosphere. - CORRECT ANSWER Refrigerants such
as CFCs that contain chlorine but not hydrogen are so stable that they do not break down in the
lower atmosphere. The chlorine (or bromine) only breaks down when it reacts with the ozone
molecules up higher in the stratosphere changing it to oxygen, thus breaking the ozone layer
down.
A system is considered dehydrated when?
the vacuum indicator shows you have reached and held the required vacuum.
the vacuum pump has run at least 5 hours.
the manifold suction gauge has held a 30 inch hg vacuum for 3 hours.
, it asks you for a drink of water. - CORRECT ANSWER The vacuum indicator shows you
have reached and held the required vacuum.
Disposable refrigerant containers are used for _________ refrigerants.
recycled
recovered
virgin / new
Both A and B - CORRECT ANSWER Virgin/New
Which of the following refrigerants is an HCFC?
R-124
R-134a
R-410a
R-12 - CORRECT ANSWER R-124
Which of the following statements is true about an azeotrope refrigerant mixture?
It is always made from just two components.
It has a pressure-temperature curve identical to one of its components.
It is a mixture made from at least three different refrigerants.
It is a mixture that acts like a single component refrigerant over its entire range. - CORRECT
ANSWER It is a mixture that acts like a single component refrigerant over its entire range.
Chlorofluorocarbon (CFC) and hydrofluorocarbon (HCFC) refrigerants have which of the
following in common?
They have identical ODP.
They both contain hydrogen.
They have the same normal boiling points.
ACTUAL Exam Questions and CORRECT
Answers
The EPA can require a technician to demonstrate the abilities to perform proper procedures for
recovering and/or recycling refrigerant. Failure to demonstrate competency can result in?
revocation of the technicians certification.
seizure of the technicians recovery/recycling equipment.
seizure of any refrigerant purchased by the technician that they still are in possession of.
mandatory attendance at refrigeration training boot camp where they will have to run in place for
8 hours/day while holding a manifold gauge set over their head. - CORRECT
ANSWER Revocation of the technicians certification.
What characteristic of CFC refrigerants make them more likely to reach the stratosphere than
most other compounds that contain chlorine?
Refrigerants such as CFCs that contain chlorine but not hydrogen are so stable that they do not
break down in the lower atmosphere. The chlorine (or bromine) only breaks down when it reacts
with the ozone molecules up higher in the stratosphere changing it to oxygen, thus breaking the
ozone layer down.
CFCs are lighter than other damaging compounds making them easier to float upward when
released.
CFCs are attracted to the static in the stratosphere.
CFCs are attracted to the dust in the stratosphere. - CORRECT ANSWER Refrigerants such
as CFCs that contain chlorine but not hydrogen are so stable that they do not break down in the
lower atmosphere. The chlorine (or bromine) only breaks down when it reacts with the ozone
molecules up higher in the stratosphere changing it to oxygen, thus breaking the ozone layer
down.
A system is considered dehydrated when?
the vacuum indicator shows you have reached and held the required vacuum.
the vacuum pump has run at least 5 hours.
the manifold suction gauge has held a 30 inch hg vacuum for 3 hours.
, it asks you for a drink of water. - CORRECT ANSWER The vacuum indicator shows you
have reached and held the required vacuum.
Disposable refrigerant containers are used for _________ refrigerants.
recycled
recovered
virgin / new
Both A and B - CORRECT ANSWER Virgin/New
Which of the following refrigerants is an HCFC?
R-124
R-134a
R-410a
R-12 - CORRECT ANSWER R-124
Which of the following statements is true about an azeotrope refrigerant mixture?
It is always made from just two components.
It has a pressure-temperature curve identical to one of its components.
It is a mixture made from at least three different refrigerants.
It is a mixture that acts like a single component refrigerant over its entire range. - CORRECT
ANSWER It is a mixture that acts like a single component refrigerant over its entire range.
Chlorofluorocarbon (CFC) and hydrofluorocarbon (HCFC) refrigerants have which of the
following in common?
They have identical ODP.
They both contain hydrogen.
They have the same normal boiling points.
