EPA 608 core Exam Study Guide – Practice Questions with Verified Answers. GRADED A+. Latest 2026/2027 Update

EPA 608 core Exam Study Guide –
Practice Questions with Verified
Answers. GRADED A+. Latest
2026/2027 Update




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 __________________________.