EPA CORE PART 1 Questions 1-80

1. Refrigeration technicians who violate the Clean Air Act can:

• lose their EPA certification.

• be fined. 

• be required to appear in Federal court. 

• all of the above

After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from:  

• A) recovery and recycling.

• B) solvent conversion

• C) European chemical manufacturers.

• D) Third World chemical manufacturers.

3. Refrigerant that is recovered can be returned to:  

• A) the same system or other systems owned by the same person without restriction. 

• B) used in any system serviced that day 

• D) Called Reclaimed if a filter-drier was used during recovery. 

• D) Called Reclaimed if a filter-drier was used during recovery. 

4. Refrigerant can not be called "reclaimed" unless it:  

• A) was processed in a reclaiming machine. 

• B) has been chemically analyzed and the refrigerant meets the ARI-700 purity standard.

• C) is recovered from a system less than 1 year old.  

• D) is recovered from a system still under warrantee.

5. The EPA can require a technician to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant.  Failure to demonstrate competency can result in:  

• A) revocation of the technician's certification.  

• B) seizure of the technician's recovery or recycling equipment. 

• C) seizure of any refrigerant purchased by the technician which is still in his/her possession. 

• D) mandatory attendance at a refrigerant training camp. 

6. What characteristic(s) of CFCs make them more likely to reach the stratosphere than most other compounds containing chlorine?  A) Refrigerants that contain chlorine but not hydrogen are so stable that they do not break down in the lower atmosphere after being released.  The chlorine or bromine reacts with ozone, causing it to change back to oxygen, thus destroying the ozone layer. 

• A) Refrigerants that contain chlorine but not hydrogen are so stable that they do not break down in the lower atmosphere after being released.  The chlorine or bromine reacts with ozone, causing it to change back to oxygen, thus destroying the ozone layer. 

• B) CFCs are lighter than other damaging compounds, making it easier for them to float upward when released

• C) CFCs are attracted to the static in the atmosphere. 

• D) CFCs are attracted to dust in the atmosphere. 

7. A system is considered dehydrated when:  

• A) the vacuum indicator shows you have reached and held the required finished vacuum. 

• B) the vacuum pump has run at least 7 hours.

• C) the manifold suction gauge has held a 30 in. hg./760 mm vacuum for 3 hours.  

• D) you are ready to leave for the day. 

8. Disposable refrigerant containers are used for _______ refrigerant.  

• A) recycled 

• B) recovered  

• C) virgin  

• D) both a and b 

9. Which refrigerant is an HCFC?  

• A) R-124  

• B) R-134a 

• C) R-410A  

• D) R-12 

10. What statement is true about an azeotropic refrigerant mixture?  

• A) It is always make from just two components.

• B) It has a pressure-temperature curve identical to one of its components.

• C) It is a mixture that is always made from at least three component refrigerants

• D) It is a mixture that acts like a single-component refrigerant over its entire range