Question 1: Refrigerants ............... category have higher toxicity?
- A
- B
- C
- D
EPA 608
NEC 2023
EPA 608 Core Exam Practice Test 4
Free online EPA Practice Test (Core Exam)-4
TOPICS COVERED
epa 608 practice tests
How this test works
Read each question carefully
Look for absolute words like always / never — they often distinguish the right answer.
Manage your time
You have 18 min for 12 questions. Skip tough ones and come back.
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Review your answers
After submitting you'll see every explanation and your NEC references.
Frequently Asked Questions
Yes — completely free with no account needed.
The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.
Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.
You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.
12
Questions
18 min
Time
70%
Pass
Timer starts immediately. Progress is auto-saved.
0
Correct0
Wrong0s
TimeEPA 608 Core Exam Practice Test 4 — Question List
Question 2: Which atom of CFC damages the ozone layer?
- chlorine
- carbon
- floride
- Florine
Question 3: How much is the penalty per day for violation of Clean Air Act?
- $27500
- $25500
- $18700
- $10000
Question 4: The ability of a substance that absorbs moisture easily is called as ..................
- hygroscopic
- Azeotropic
- Zeotropic
- absorbent
Question 5: If the system heated during dehydration it ................
- speeds up moisture removal
- speeds up dust removal
- speeds up hydrogen removal
- speeds up oxygen removal
Question 6: Whether the composite refrigerant can be reclaimed?
- Yes
- No
Question 7: A small refrigerant contains ................ pounds or less refrigerant
- Five
- Six
- Eight
- Nine
Question 8: During recovery if you smell strong odor, the most likely problem is ...........
- compressor burnout
- evaporator burnout
- condenser burnout
- meeting device burnout
Question 9: If there are contaminants in oil what should be done?
- The oil should be removed
- The oil should be purified
- The system need to be flushed
- The refrigerant needs to recovered
Question 10: It is important to ............ all refrigerant before evacuating a system.
- Recover
- Recycle
- Dispose
- Reclaim
Question 11: refrigerant cylinders never be stored in ......... areas.
- very cold
- very hot
- dust
- sub cooled
Question 12: Ice occurred on slight glasses must be removed by using ..................
- alcohol spray
- nitrogen spray
- heater
- screw driver
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