EPA 608 Core Test Sample Questions and Answers
2024 Version 1 and 2 100% Correct
Which of the following refrigerant has a GWP of "1"?
A) R-22
B) R-1233zd
C) R-410A
D) R-134a - ANSWER: B) R-1233zd
The molecule found in CFCs and HCFCs that depletes O-Zone is:
A) Fluorine
B) Chlorine
C) Hydrogen
D) Carbon - ANSWER: B) Chlorine
Recover any remaining refrigerant and then render the cylinder useless, then recycle
the metal is the proper disposal method for;
A) disposable cylinders
B) recovery cylinders
C) one pound cans
D) accumulator cylinders - ANSWER: A) disposable cylinders
The condenser __________________________.
A) Changes a high-pressure vapor to a high-pressure liquid.
B) Changes a low pressure liquid to a low pressure vapor.
C) changes a low-pressure vapor to a low-pressure liquid.
D) changes a high-pressure liquid to a low-pressure liquid. - ANSWER: A) Changes a
high-pressure vapor to a high-pressure liquid.
An ozone molecule contains;
A) Four oxygen atoms
B) Three oxygen atoms
C) Two oxygen atoms
D) One oxygen atom - ANSWER: B) Three oxygen atoms.
The low-side test-pressure data-plate valve should be used by a technician to
determine a safe pressure for:
A) refrigerant charging
B) leak testing.
, C) recovering refrigerant
D) retrofitting a system - ANSWER: B) leak testing.
HCFCs contain;
A) hydrogen, fluorine, and olefin
B) hydrogen, chlorine, fluorine, and carbon
C) chlorine, fluorine, and carbon
D) hydrogen, fluorine, and carbon - ANSWER: B) hydrogen, chlorine, fluorine, and
carbon.
Reusable refrigerant containers under high-pressure must be hydrostatically tested
how often?
A) 1 year
B) 3 years
C) 5 years
D) 7 years - ANSWER: C) 5 years
The compressor __________________________.
A) Changes a high-pressure vapor to a high-pressure liquid.
B) Changes a high-pressure liquid to a low pressure liquid.
C) changes a low-pressure vapor to a high-pressure vapor.
D) Changes a low-pressure liquid to a low-pressure vapor. - ANSWER: C) changes a
low-pressure vapor to a high-pressure vapor.
The chlorine in CFCs and HCFCs;
A) Will rain out of the atmosphere.
B) Will not dissolve in water.
C) is heavier than air and cannot rise to the stratosphere.
D) Will dissolve in water. - ANSWER: B) Will not dissolve in water.
A single chlorine atom can destroy how many O-Zone molecules?
A) 100,000
B) 10,000
C) 1,000
D) 100 - ANSWER: A) 100,000
A refrigerant cylinder designed to hold recovered refrigerant has a:
A) Yellow body and grey top.
B) Green body and yellow top.
C) Grey body and yellow top.
D) Orange body and grey top. - ANSWER: C) Grey body and yellow top.
2024 Version 1 and 2 100% Correct
Which of the following refrigerant has a GWP of "1"?
A) R-22
B) R-1233zd
C) R-410A
D) R-134a - ANSWER: B) R-1233zd
The molecule found in CFCs and HCFCs that depletes O-Zone is:
A) Fluorine
B) Chlorine
C) Hydrogen
D) Carbon - ANSWER: B) Chlorine
Recover any remaining refrigerant and then render the cylinder useless, then recycle
the metal is the proper disposal method for;
A) disposable cylinders
B) recovery cylinders
C) one pound cans
D) accumulator cylinders - ANSWER: A) disposable cylinders
The condenser __________________________.
A) Changes a high-pressure vapor to a high-pressure liquid.
B) Changes a low pressure liquid to a low pressure vapor.
C) changes a low-pressure vapor to a low-pressure liquid.
D) changes a high-pressure liquid to a low-pressure liquid. - ANSWER: A) Changes a
high-pressure vapor to a high-pressure liquid.
An ozone molecule contains;
A) Four oxygen atoms
B) Three oxygen atoms
C) Two oxygen atoms
D) One oxygen atom - ANSWER: B) Three oxygen atoms.
The low-side test-pressure data-plate valve should be used by a technician to
determine a safe pressure for:
A) refrigerant charging
B) leak testing.
, C) recovering refrigerant
D) retrofitting a system - ANSWER: B) leak testing.
HCFCs contain;
A) hydrogen, fluorine, and olefin
B) hydrogen, chlorine, fluorine, and carbon
C) chlorine, fluorine, and carbon
D) hydrogen, fluorine, and carbon - ANSWER: B) hydrogen, chlorine, fluorine, and
carbon.
Reusable refrigerant containers under high-pressure must be hydrostatically tested
how often?
A) 1 year
B) 3 years
C) 5 years
D) 7 years - ANSWER: C) 5 years
The compressor __________________________.
A) Changes a high-pressure vapor to a high-pressure liquid.
B) Changes a high-pressure liquid to a low pressure liquid.
C) changes a low-pressure vapor to a high-pressure vapor.
D) Changes a low-pressure liquid to a low-pressure vapor. - ANSWER: C) changes a
low-pressure vapor to a high-pressure vapor.
The chlorine in CFCs and HCFCs;
A) Will rain out of the atmosphere.
B) Will not dissolve in water.
C) is heavier than air and cannot rise to the stratosphere.
D) Will dissolve in water. - ANSWER: B) Will not dissolve in water.
A single chlorine atom can destroy how many O-Zone molecules?
A) 100,000
B) 10,000
C) 1,000
D) 100 - ANSWER: A) 100,000
A refrigerant cylinder designed to hold recovered refrigerant has a:
A) Yellow body and grey top.
B) Green body and yellow top.
C) Grey body and yellow top.
D) Orange body and grey top. - ANSWER: C) Grey body and yellow top.
