ENN103F EXAM PACK 2026 COMPREHENSIVE
STUDY GUIDE FULL SOLUTIONS PASSED A+
◉ 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.
STUDY GUIDE FULL SOLUTIONS PASSED A+
◉ 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.
