Which atmospheric component do CFC and HCFC refrigerants destroy when chlorine is released into the stratosphere?
Core Clean Air Act Ozone
Question · Easy
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EPA 608 Universal Certification Exam Guide 2026: Core, Type I-III, Passing Scores, and the New HFC Rules
A source-checked EPA 608 Universal guide: the 100-question structure, the 70% and 84% passing rules, why an open-book Core cannot count, the 2026 AIM Act changes, and a section-by-section study plan.
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Under Section 608 of the Clean Air Act, what practice became illegal beginning November 15, 1995?
Chapter 1: Clean Air Act, Ozone Depletion & Regulations
1.1 Stratospheric Ozone & Chlorine Depletion Mechanism
Study guide
The international treaty that phases out the production of ozone-depleting substances is the:
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What does the recovery 'R' refer to in the three R's of refrigerant management?
Core Recovery Recycle Reclaim
Refrigerant that has been reprocessed to meet the ARI 700 purity standard and verified by chemical analysis is said to have been:
Question · Medium
Recycling refrigerant differs from reclaiming because recycling:
1.2 Clean Air Act Title VI & Montreal Protocol
Which class of refrigerant has the highest ozone-depletion potential and was the first targeted for phaseout?
Core Refrigerants Substitutes
A refillable refrigerant recovery cylinder must never be filled above what percentage of its capacity?
Core Safety
Which gas should be used to pressurize a system for leak detection so that no flammable or explosive mixture is created?
A major health hazard of being in a poorly ventilated area with a large refrigerant leak is:
1.3 Section 608 Regulations & Technician Certification
Contact with liquid refrigerant escaping from a system is most likely to cause:
Refrigerant cylinders should be stored and transported so they are not exposed to temperatures above approximately:
Releasing refrigerant from a small appliance because the technician believes the amount is too small to matter is:
A small amount of refrigerant lost during connecting or disconnecting gauges and hoses is referred to as a:
Chapter 2: Recovery, Recycling & Reclamation
2.1 The Three R Definitions & Reuse Standards
During the refrigeration cycle, the component where high-pressure vapor rejects heat and condenses into a liquid is the:
Core Refrigeration Cycle
On the low-pressure side of a system, the refrigerant in the evaporator is primarily in what state as it absorbs heat?
To remove non-condensable gases and moisture from a system before charging, a technician should:
Why is moisture (water) particularly harmful inside a refrigeration system?
2.2 Refrigerant Cross-Contamination & Mixing Hazards
Refrigerant recovered from one owner's appliance may be returned to a different owner's equipment only if it has been:
What does a high Global Warming Potential (GWP) value indicate about an HFC refrigerant?
Which document must be kept to show a buyer of a recovery or recycling machine is properly certified to handle refrigerant?
Core Recordkeeping
The color code historically used to identify cylinders of recovered refrigerant (regardless of type) is:
2.3 Recovery Speed Factors & Evacuation Dehydration
Before a recovery cylinder is filled, it should be checked to ensure it has been:
U.S. production of CFC refrigerants such as R-12 ended in what year under the Clean Air Act phaseout?
Question · Hard
Production and import of the HCFC refrigerant R-22 ended in the United States on:
The EPA-approved long-term substitute that replaced R-12 in new household refrigerators and small appliances is:
Chapter 3: Refrigeration Cycle, Gauges & Substitute Refrigerants
3.1 Vapor Compression Refrigeration Cycle & Thermodynamics
When two different refrigerants are mixed together in a recovery cylinder, the mixture:
An EPA-certified reclaimer that sells reclaimed refrigerant must process it to the purity standard known as:
Refrigerant exposed to an open flame or very high temperature can decompose into hazardous byproducts including:
The Significant New Alternatives Policy (SNAP) program reviews substitute refrigerants primarily to determine whether they are:
3.2 Service Gauges, Pressures & Leak Detection Methods
Under EPA Section 608, a 'small appliance' is defined as a product that was fully manufactured, charged, and hermetically sealed in a factory and contains:
Type I Small Appliance Definition
Which of the following is NOT typically classified as a Type I small appliance?
System-dependent (passive) recovery refers to a method that:
Type I Recovery Methods
Self-contained (active) recovery equipment differs from system-dependent equipment because self-contained equipment:
3.3 Substitute Refrigerants, Fractionation & Lubricant Compatibility
When recovering from a small appliance whose compressor IS operating, using recovery equipment manufactured on or after November 15, 1993, the technician must recover:
Type I Recovery Requirements
When recovering from a small appliance whose compressor is NOT operating, the technician must recover at least:
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