EPA 608 Core Exam Test Bank 2025: Practice Test & Study Guide

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EPA SECTION 608 CORE EXAM AND PRACTICE EXAM

NEWEST 2025 TEST BANK| COMPLETE 650 REAL EXAM

QUESTIONS AND CORRECT VERIFIED ANSWERS/

ALREADY GRADED A+| EPA SECTION 608 CORE

EXAM PREP 2025 (MOST RECENT!!)

What does ozone in the stratosphere above the earth consist of?

a. Molecules containing 2 oxygen atoms.

b. Molecules containing 3 oxygen atoms.

c. Molecules containing 4 oxygen atoms.

d. Molecules containing 5 oxygen atoms

.....ANSWER..... b. Molecules containing 3 oxygen atoms.

Which of the following refrigerants has the lowest global

warming potential?

a. R-134a

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b. R-407C

c. R-410A

d. R-600a

.....ANSWER..... d. R-600a

Which of the following gases is used as the baseline

measurement for global warming potential?

a. Ammonia

b. Carbon Dioxide

c. CFC-12

d. Propane

.....ANSWER..... b. Carbon Dioxide

Which type of refrigerant typically has the lowest global

warming potential?

a. HCFCs

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b. HFOs

c. HFCs

d. All are equal

.....ANSWER..... b. HFOs

What is the state of refrigerant entering the compressor of a

refrigeration system?

a. Low pressure subcooled liquid

b. Low pressure superheated vapor

c. High pressure subcooled liquid

d. High pressure subcooled vapor

.....ANSWER..... b. Low pressure superheated vapor

How does the global warming potential of R-410A compare to

that of carbon dioxide?

a. It is lower.

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b. They are equal.

c. It is hundreds of times greater.

d. It is thousands of times greater.

.....ANSWER..... d. It is thousands of times greater.

How do the global warming potentials of isobutane

(R-600a), propane (R-290), and R-441A compare to

the GWPs of HFC-134a, R404A, and R-410A?

a. They are significantly higher.

b. They are significantly lower.

c. They are approximately equal

d. They are slightly higher.

.....ANSWER..... b. They are significantly lower.

What are the characteristics of hydrofluoroolefins (HFOs)?