CFC LATEST 2026 EXAM QUESTIONS AND ANSWERS
RATED A+
✔✔Which refrigerant is an HFC? - ✔✔R-134a
✔✔Stratospheric ozone depletion is a ____problem: - ✔✔Global
✔✔Chlorine in the stratosphere is believed to come primarily from CFC's rather than
from natural sources such as volcanoes because: - ✔✔All of the above:
The rise in the amount of chlorine measured in the stratosphere over the last twenty
years matches the amount of fluorine, which has different natural sources than chlorine,
over the same period
The rise in the amount of chlorine measured in the stratosphere over the last twenty
years matches the rise in CFC emissions over the same period
Samples of air taken from the stratosphere over erupting volcanoes show that
volcanoes contribute only a small quantity of chlorine to the stratosphere compared to
CFCs
✔✔Disposable refrigerant containers are used for what type of refrigerant? - ✔✔virgin
✔✔Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of
the following in common? - ✔✔They must be recovered before opening or disposing of
appliances.
✔✔Which of the following refrigerants is a good "drop in" alternative for R-12? -
✔✔Neither A nor B
✔✔Which of the following refrigerants has the lowest ozone depletion potential? - ✔✔R-
134a
✔✔During service of a refrigeration system containing R-12, the refrigerant must be: -
✔✔recovered
✔✔Removing refrigerant from a system and storing it in an external container without
testing or processing it in any way is called: - ✔✔Recovering
✔✔What is the significance of an azeotropic mixture? - ✔✔The mixture combines and
creates a third refrigerant with its own individual characteristics
✔✔When addressing consumer complaints about additional service expense due to
recovery procedures, the technician should explain to the customer that: - ✔✔All of the
above:
, Recovery is necessary to protect human health and the environment
Recovery is required by law
Professional service technicians are duty bound to comply with the law and to protect
the environment
✔✔The Clean Air Act: - ✔✔All of the above:
Calls for the phase out of CFC/HCFC production.
Prohibits venting of CFC and HCFC refrigerants and their substitutes.
Requires EPA to set standards for recovery of refrigerants prior to appliance disposal.
✔✔The synthetic lubricant used with HCFC-based ternary blends is: - ✔✔Alkylbenzene
✔✔Some state and local governments may establish laws that: - ✔✔Both A and C:
a.
Contain stricter provisions than the Clean Air Act and the EPA regulations
c.
Exactly follow the Clean Air Act and EPA regulations
✔✔The rule of thumb for refilling approved cylinders is a maximum of percent liquid? -
✔✔%80
✔✔What chemical found in the upper stratosphere indicates that the ozone layer is
being destroyed? - ✔✔chlorine monoxide
✔✔Which of the following is included in the list of good service practices for conserving
refrigerant? - ✔✔Recover or recycle refrigerant.
Keep systems tight.
Find and repair leaks.
✔✔How should refrigerant cylinders be positioned when they are shipped? - ✔✔upright
✔✔Under EPA regulations, what standard must reclaimed refrigerant meet before it can
be resold? - ✔✔ari 700
✔✔R-134A is a "drop in" refrigerant for? - ✔✔There are no "drop in" refrigerants
✔✔Ozone depletion in the stratosphere is what type of problem? - ✔✔global
RATED A+
✔✔Which refrigerant is an HFC? - ✔✔R-134a
✔✔Stratospheric ozone depletion is a ____problem: - ✔✔Global
✔✔Chlorine in the stratosphere is believed to come primarily from CFC's rather than
from natural sources such as volcanoes because: - ✔✔All of the above:
The rise in the amount of chlorine measured in the stratosphere over the last twenty
years matches the amount of fluorine, which has different natural sources than chlorine,
over the same period
The rise in the amount of chlorine measured in the stratosphere over the last twenty
years matches the rise in CFC emissions over the same period
Samples of air taken from the stratosphere over erupting volcanoes show that
volcanoes contribute only a small quantity of chlorine to the stratosphere compared to
CFCs
✔✔Disposable refrigerant containers are used for what type of refrigerant? - ✔✔virgin
✔✔Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of
the following in common? - ✔✔They must be recovered before opening or disposing of
appliances.
✔✔Which of the following refrigerants is a good "drop in" alternative for R-12? -
✔✔Neither A nor B
✔✔Which of the following refrigerants has the lowest ozone depletion potential? - ✔✔R-
134a
✔✔During service of a refrigeration system containing R-12, the refrigerant must be: -
✔✔recovered
✔✔Removing refrigerant from a system and storing it in an external container without
testing or processing it in any way is called: - ✔✔Recovering
✔✔What is the significance of an azeotropic mixture? - ✔✔The mixture combines and
creates a third refrigerant with its own individual characteristics
✔✔When addressing consumer complaints about additional service expense due to
recovery procedures, the technician should explain to the customer that: - ✔✔All of the
above:
, Recovery is necessary to protect human health and the environment
Recovery is required by law
Professional service technicians are duty bound to comply with the law and to protect
the environment
✔✔The Clean Air Act: - ✔✔All of the above:
Calls for the phase out of CFC/HCFC production.
Prohibits venting of CFC and HCFC refrigerants and their substitutes.
Requires EPA to set standards for recovery of refrigerants prior to appliance disposal.
✔✔The synthetic lubricant used with HCFC-based ternary blends is: - ✔✔Alkylbenzene
✔✔Some state and local governments may establish laws that: - ✔✔Both A and C:
a.
Contain stricter provisions than the Clean Air Act and the EPA regulations
c.
Exactly follow the Clean Air Act and EPA regulations
✔✔The rule of thumb for refilling approved cylinders is a maximum of percent liquid? -
✔✔%80
✔✔What chemical found in the upper stratosphere indicates that the ozone layer is
being destroyed? - ✔✔chlorine monoxide
✔✔Which of the following is included in the list of good service practices for conserving
refrigerant? - ✔✔Recover or recycle refrigerant.
Keep systems tight.
Find and repair leaks.
✔✔How should refrigerant cylinders be positioned when they are shipped? - ✔✔upright
✔✔Under EPA regulations, what standard must reclaimed refrigerant meet before it can
be resold? - ✔✔ari 700
✔✔R-134A is a "drop in" refrigerant for? - ✔✔There are no "drop in" refrigerants
✔✔Ozone depletion in the stratosphere is what type of problem? - ✔✔global
