MACS 609 CERTIFICATION EXAM QUESTIONS AND ANSWERS
(VERIFIED ANSWERS) (LATEST UPDATE 2025) UPDATE!!
1. T/F Ozone at ground level FALSE
ans at Stratosphere is a
harmful pollutant
2. For determining the Ozone CFC-11
Depletion Potential having
been assigned a
factor of 1
3. Ozone layer absorbs and scatters Ultraviolet light
____ form the sun
4. T/F R-134 is a chlorine-free TRUE
refrigerant
5. a refillable refrigerant 80%
cylinder must not be filled
above _______ of its full
capacity
6. T/F Ester-based synthetic FALSE
oils can be mixed with oils
7. An award of up to _ may be paid $10,000
to a person suppplying
information that leads to a
penalty against a technician who is
intentially venting
8. MVAC systems being disposed 4 INCHES
must be evacuated to of
mercury before
being scrapped
, 9. Since ____ it is no longer legal JAN 1ST, 1996
for
CFCs to be manufactured or
imported into the United States
10. Since _______ it is illegal to vent NOV 15, 1995
substitutes for CFC and HCFC
refrigerants
11. Each chlorine ion are able to 100,000
destroy
________ ozone molecules
12. Lifetime of CFSs is believed 20 TO 100
to range from years
13. Ozone molecules consists of THREE
_______________ atoms of oxygen
14.Non-condensables in a higher
refrigeration system result in a
_________________dischar
ge
pressure
15. T/F Ozone depletion increases TRUE
global warming
16. T/F If a technician is already FALSE
trained and certified to handle
HFC-134a
17.The Clean Air Act (CAA) of 1990
_____________ directs EPA to
establish requirements
18. Over the road refrigeration such as that found in buses, also require Section certification, 608
units and R- 22 (HCFC) air
conditioning
19. Moisture level in Recycled R- and intended to be returned to, a mobile air-conditioning system cannot
12(CFC-12) that has been exceed
_ _____ PPM by weight, 15
directly removed from
20. At high temperature hydrochloric or hydrofluoric acid
CFC-12 can decompose to
form _____________
21. T/F Refrigerants are light than air FALSE
(VERIFIED ANSWERS) (LATEST UPDATE 2025) UPDATE!!
1. T/F Ozone at ground level FALSE
ans at Stratosphere is a
harmful pollutant
2. For determining the Ozone CFC-11
Depletion Potential having
been assigned a
factor of 1
3. Ozone layer absorbs and scatters Ultraviolet light
____ form the sun
4. T/F R-134 is a chlorine-free TRUE
refrigerant
5. a refillable refrigerant 80%
cylinder must not be filled
above _______ of its full
capacity
6. T/F Ester-based synthetic FALSE
oils can be mixed with oils
7. An award of up to _ may be paid $10,000
to a person suppplying
information that leads to a
penalty against a technician who is
intentially venting
8. MVAC systems being disposed 4 INCHES
must be evacuated to of
mercury before
being scrapped
, 9. Since ____ it is no longer legal JAN 1ST, 1996
for
CFCs to be manufactured or
imported into the United States
10. Since _______ it is illegal to vent NOV 15, 1995
substitutes for CFC and HCFC
refrigerants
11. Each chlorine ion are able to 100,000
destroy
________ ozone molecules
12. Lifetime of CFSs is believed 20 TO 100
to range from years
13. Ozone molecules consists of THREE
_______________ atoms of oxygen
14.Non-condensables in a higher
refrigeration system result in a
_________________dischar
ge
pressure
15. T/F Ozone depletion increases TRUE
global warming
16. T/F If a technician is already FALSE
trained and certified to handle
HFC-134a
17.The Clean Air Act (CAA) of 1990
_____________ directs EPA to
establish requirements
18. Over the road refrigeration such as that found in buses, also require Section certification, 608
units and R- 22 (HCFC) air
conditioning
19. Moisture level in Recycled R- and intended to be returned to, a mobile air-conditioning system cannot
12(CFC-12) that has been exceed
_ _____ PPM by weight, 15
directly removed from
20. At high temperature hydrochloric or hydrofluoric acid
CFC-12 can decompose to
form _____________
21. T/F Refrigerants are light than air FALSE
