1. T/F Ozone at ground level ans at Stratosphere is a harmful pollutant |
FALSE |
2. For determining the Ozone Depletion Potential __________ having been assigned a factor of 1 |
CFC-11 |
3. Ozone layer absorbs and scatters __________ form the sun |
Ultraviolet light |
4. T/F R-134 is a chlorine-free refrigerant |
TRUE |
5. a refillable refrigerant cylinder must not be filled above _________ of its full capacity |
80% |
6. T/F Ester-based synthetic oils can be mixed with oils |
FALSE |
7. An award of up to ___________ may be paid to a person suppplying information that leads to a penalty against a technician who is intentially venting |
$10,000 |
8. MVAC systems being disposed must be evacuated to _____________ of mercury before being scrapped |
4 INCHES |
9. Since _______________ it is no longer legal for CFCs to be manufactured or imported into the United States |
JAN 1ST, 1996 |
10. Since ___________________ it is illegal to vent substitutes for CFC and HCFC refrigerants |
NOV 15, 1995 |
11. Each chlorine ion are able to destroy ___________________ ozone molecules |
100,000 |
12. Lifetime of CFSs is believed to range from ________ years |
20 TO 100 |
13. Ozone molecules consists of _______________ atoms of oxygen |
THREE |
14.Non-condensables in a refrigeration system result in a ________________ discharge pressure |
higher |
15. T/F Ozone depletion increases global warming |
TRUE |
16. T/F If a technician is already trained and certified to handle HFC-134a |
FALSE |
17.The Clean Air Act (CAA) of _____________ directs EPA to establish requirements |
1990 |
18. Over the road refrigeration units and R-22 (HCFC) air conditioning |
such as that found in buses, also require Section ____________ certification, 608 |
19. Moisture level in Recycled R-12(CFC-12) that has been directly removed from |
and intended to be returned to, a mobile air-conditioning system cannot exceed ________________ PPM by weight, 15 |
20. At high temperature CFC-12 can decompose to form _____________ |
hydrochloric or hydrofluoric acid |
21. T/F Refrigerants are light than air |
FALSE |
22. T/F Every refrigerant cylinder need not be protected by some type of pressure relief device |
FALSE |
23. Stratosphere layer consists of about ____________ of the available Ozone: |
90% |
24.CFC are highly reactive in _______________ of atmosphere |
lower levels |
25.HFC-134a is the refrigerant that replaced _____________ in automotive air conditioning systems |
R-12 |
26. R-152 is a chemical compound of which of the following: |
HYDROGEN AND FLUORINE |
27. T/F R-134a a refrigerant does pose a cancer or birth defect hazard |
FALSE |
28. T/F MVAC systems need not be evacuated to a vacuum before servicing |
FALSE |
29. Disposable Refrigerant Tanks under _______________ must be evacuated before being scrapped |
20 POUNDS |
30. Supplies of CFC refrigerant for equipment servicing can ONLY come from which of the following: |
RECOVERY, RECYCLING, RECLAMATION |
31. External Recovery Tanks must be evacuated to _______ of mercury before being put in service |
27 INCHES |
32.Which of the following refrigerants has high ozone-depletion potential?: |
CFCs |
33. CFCs manufacturing was discontinued as of ______________________ |
JANUARY 1ST 1996 |
34. Which element in refrigerant makes them chemically less stable once they enter the atmosphere? |
HYDROGEN |
35. ______________ of stratospheric chlorine comes from ozone-depleting substances |
82% |
36. Which of the following has the Ozone Depletion Potential (ODP) value of 1 |
CFC-11 |
37. T/F CFC refrigerants are chemically highly unstable |
FALSE |
38. _________ has recently been approved for use in automobile applications as an alternative to R-134a |
R152A |
39. The Global Warming Potential is reported relative to ______________________ |
carbon dioxide |
40. CFCs deplete stratospheric ozone and that a hole has developed in the ozone layer over _________________________________ |
ANTARTICA |
41.R-12 is a _______________ type of refrigerant |
CFC |
42. T/F HFCs and HCFCs decompose when released in lower atmosphere |
TRUE |
43. T/F HFCs contributes to global warming |
TRUE |
44. EPA is authorized to assess fines of up to ________ per day per violation for any violation of the act |
37,500 |
45. A floor tax also applies to anyone holding __________________or more of the regulated CFCs |
400 lb |
46. T/F At present there is no restriction on the sale of HFC-134a |
TRUE |
47.T/F Ultra violet radiation breaks down the CFCs and frees the chlorine ion |
TRUE |
48.Hydrofluorocarbons (HFCs) contributes to which of the following? |
GLOBAL WARMING |
49. T/F R-134A is a flammable at ambient temperatures and atmospheric pressures |
:FALSE |
50.The Ozone layer consists of ozone in which part of the atmosphere? |
STRATOSPHERE |
51. Which of the following will not react with ozone gas: |
FLUORINE |
52. ___________________ has replaced CFC-12 in all automotive applications |
HFC-134a |
53. T/F The Thermodynamic properties of HFC-134a are similar to CFC-12 |
True |
54. The color code for R-12 disposable refrigerant cylinders is ______________ |
WHITE |
55. T/F The primary cause of over-pressurization of refrigeration cylinder is due to overheating |
TRUE |
56. As per the CAA all records related to entities of MVAC system services must be maintained for ________________________ years |
3 |
57. Since _____________ it has been illegal to vent substitutes for CFC 3 and HCFC refrigerants |
NOV 15 1995 |
58. Since _____________ it has been mandatory to recycle HFC-134a as well as any other automotive refrigerant before returning to that MVAC or sold: |
JAN 29, 1998 |
59. Montreal Protocol is signed in ________________ by 23 countries including USA |
Sep 1987 |
60. T/F Halons were completely phased out by 1994 |
True |
61. HFC-134a refrigerant has an Ozone Depletion Potential of: |
0 |
62. T/F R-134a refrigerant has low solubility in non-polar lubricants |
TRUE |
63. Use of Carbon Dioxide (R-744) refrigerant results in a _________________ efficiency |
MUCH LOWER |
64. R-134a disposable refrigerant cylinder ________________ color coded: |
LIGHT BLUE |
65. Disposable cylinder are manufactured to specifications established by: |
DOT |
66. Disposable cylinders are manufactured from: |
STEEL |
67. Recovery cylinders are painted yellow in the shoulder area and ______________ down the side |
12 INCHES |
68. Moisture content in recycled R-134a (HFC-134a) that has been directly removed from and intended to be returned to a mobile air-conditioning system cannot exceed ________________ by weight |
50 PPM |
69. T/F Technicians who repair or service HFC-134a MVACs must be trained and certified by an EPA-approved organization |
TRUE |
70. The sale of small containers of refrigerant under ________ including the one pound cans are restricted to only people certified in Section 609 |
20 lb |
71. Average ozone construction in Earth atmosphere as a whole is only about ______________ parts per million |
0.3 |
72. T/F Ozone layer is present in both Stratosphere and mesosphere layers of earth atmosphere |
FALSE |
73. Which of the following refrigerant has a molecular formula is C2H4F2: |
R-152a |
74. After reaching the required recovery vacuum on a system if the system pressure _______ indicating that there is either refrigerant in liquid form refrigerant trapped in the oil or a leak in the system |
RISES |
75. T/F R-134a is a corrosive refrigerant |
FALSE |
76. With the rising cost of refrigerant the value of the refrigerant stored in a 50lb. recovery tank is worth ____________________ the cost of a recovery tank |
FIVE TIMES |
77. T/F Used Cylinders can be recycled with other scrap metal |
TRUE |
78. Refrigeration cylinders must be re-tested at ___________________ intervals |
FIVE-YEAR |
79. Refrigerants may be mixed in recovery cylinders |
FALSE |
80. On _______________________ the U.S. EPA enacted the provisions of this agreement into regulations for the United States |
AUG 1, 1988 |
81. Persons servicing MVACs do not have this choice they must be certified as ______________ MVAC technicians if they perform the AC service for compensation |
SECTION 609 |
82. The AHRI standard now contains the new specification to limit unsaturated impurities in HFC-134a to a maximum level of __________________________ |
40 PPM |
83. One chlorine or bromine radical liberated has the capability to act as a catalyst and breakdown _______________________ number of ozone molecules in stratosphere: |
100,000 |
84. Ozone in the Earth stratosphere is created by UV light striking ________________molecule |
OXYGEN |
85. T/F Ozone at ground level is a harmful pollutant |
TRUE |
86. HFC-152a MVAC systems are acceptable if MVAC systems must be designed to avoid concentrations in the passenger cabin that are above __________ for more than 15 seconds |
3.7% |
87. Chlorine reacts with ozone and converts ozone to: |
OXYGEN |
88. The sale of small containers of refrigerant under __________including the one pound cans are restricted to only people certified in Section 609 |
20 LB |
89. Section 608 HVAC/R Technicians cannot buy refrigerant in quantities less than ________________ |
20 LBS |
90. According to ____________ service shops must certify to the EPA that they own approved recovery. |
CAA |
91. Skin or eye contact with fluorocarbon refrigerants can result in |
IRRITATION, FROSTBITE, DEATH |
92. T/F Refrigerant are lighter than air: |
FALSE |
93. Which of the following refrigerants has minimum or zero ozone depletion potential: |
HFCs |
94. T/F Most halogenated compounds will decompose at room temperature: |
FALSE |
95. T/F Ozone is an unstable molecule: |
TRUE |
96. Countries responsible for approximately ____________ of the worlds production capacity for CFCs for CFCs and halons have signed the Montreal Protocol |
95% |
97. T/F Refrigerants that contain chlorine but not hydrogen are stable |
TRUE |
98. HFC-134a contribute to which of the following: |
GLOBAL WARMING |
99. Ozone layer extends at Earth altitude between _____________. |
7 AND 30 MILES |
100. __________ has developed standards that apply to the recovery and recycling of motor vehicles refrigerant as well as service guidelines for MVAC technicians |
SAE |
101. T/F EPA does require a leak to be repaired prior to recharging a motor vehicle air conditioning system |
FALSE |
102. Any person who sells or distributes any Class I or Class II substance in a container of less than _____________ of such refrigerant must verify that the purchaser is Properly Trained and 609 Certified and must retain a record |
20 POUNDS |
103. The per the AHRI standard unsaturated impurities in HFC-134a to be limited to a maximum level _______________________: |
40 PPM |
104. Prior to scrapping MVAC equipment the refrigerant must be recovered to a minimum vacuum of ________________________ of mercury |
4 INCHES |
105. The internal pressure of a refrigerant cylinder with one ounce of liquid refrigerant is ____________________ full cylinder: |
exactly the same as |
106. The empty refillable refrigerant tank must be evacuated to a minimum vacuum of ____________ of mercury |
27 INCHES |
107.____________ is the key agent responsible for stratospheric ozone depletion |
CHLORINE MONOXIDE |
108. Which of the following are the causes of Ozone Layer Depletion: |
VOLCANIC ERUPTIONS |
109. The CO2 system would be acceptable to the EPA under the condition that MVAC system was designed to avoid concentrations in the passenger cabin that are above ______________ for more than 15 minutes |
3% |
110. The _____________ has developed a standard recovery and recovery/ recycling machines that are to be used with flammable refrigerants |
SAE |
111. Which of the following are associated with the risk of depletion of ozone layer |
DAMAGE TO AGRICULTURE AND WILDLIFE, DAMAGE TO AQUATIC ORGANISMS, INCREASE IN SKIN CANCERS, INCREASED GLOBAL WARMING |
112. T/F The U.S EPA does characterize used refrigerants as hazardous waste |
FALSE |
113. Since ______________ it has been illegal to vent substitutes for chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFCs) refrigerants: |
NOV 15, 1995 |
114. R-152a refrigerant chemical compound is not composed of which of the following: |
CHLORINE |
115. Purity specification of new recycled or reclaimed R-134a must meet ___________ standard: |
AHRI STANDARD 700 |
116. Under these safe disposal requirements as per the EPA the final person in the disposal chain is responsible for ensuring that the refrigerant is recovered from the equipment before the final disposal of the equipment: |
TRUE |
117. Refrigerant containers which contain refrigerant more than 20 pounds can be sold to a person who holds ____________ |
EITHER SECTION 608 OR SECTION 609 CERTIFICATION |
118. Service technicians who violate Clean Air Act provisions can be: |
FINED, LOSE THEIR CERTIFICATION, FACE FEDERAL CHARGES |
119. Which of the following are most stable in lower atmospheres of Earth: |
CFCs |
120. Which of the following is the example of the HFCs |
R-134a |
EPA 609 Technician Certification
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