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Free Practice Quiz Question List

5 Core Section Practice Online Quiz Questions

Use this free practice quiz with 20 questions to review 5 Core Section Practice, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: Motor-vehicle air conditioning is principally covered by Section 608.

  1. A

    True

  2. B

    False

02
True or false
1 point

True or false: A refrigerant with zero ozone-depletion potential necessarily has no climate impact.

  1. A

    True

  2. B

    False

03
Written response
1 point

What abbreviation names the measure that compares a substance's heat-trapping effect with carbon dioxide over a specified period?

04
Fill in the blank
1 point

In a refrigeration system, refrigerant absorbs heat at low pressure as it .

05
Fill in the blank
1 point

At the end of service, a vacuum pump is used to remove from the system.

06
Written response
1 point

In what year did the prohibition on new production and import of HCFC-22 for servicing begin?

07
Choose one
1 point

Which Section 608 certification category is specifically designated for low-pressure appliances?

  1. A

    Type I

  2. B

    Type II

  3. C

    Type III

  4. D

    Type IV

08
Choose one
1 point

A technician needs to pressure-test a system. Which choice specifies both the appropriate test gas and the required pressure protection?

  1. A

    Oxygen, with a regulator

  2. B

    Dry nitrogen, with a regulator and pressure-relief protection

  3. C

    Compressed air, with a pressure-relief device

  4. D

    Refrigerant vapor, without a regulator

09
Choose one
1 point

A technician wants the Section 608 Core exam to count toward Universal certification. Which exam condition must be met?

  1. A

    The Core exam must be proctored.

  2. B

    The technician must first hold Type I certification.

  3. C

    The Core exam must be taken only after all three Type exams.

  4. D

    The Core exam must be completed at the technician's workplace.

10
Choose one
1 point

A technician is deciding whether to add more recovered refrigerant to a cylinder that is near its rated limit. Why must the cylinder not be overfilled?

  1. A

    It prevents the refrigerant from changing into a vapor.

  2. B

    As the refrigerant warms and expands, excess liquid can create dangerous pressure.

  3. C

    It causes the cylinder label to become unreadable.

  4. D

    It makes the recovery equipment unable to identify the refrigerant.

11
Choose all
1 point

A refrigerant leak occurs in a confined, poorly ventilated work area. Select all actions consistent with safe work practices.

  1. A

    Ventilate the work area.

  2. B

    Enter the area immediately to locate the leak, even if it may be oxygen-deficient.

  3. C

    Use suitable eye and hand protection.

  4. D

    Do not enter an unsafe area without appropriate training and respiratory protection.

12
Choose all
1 point

A shop is preparing recovered refrigerant for possible transfer to another owner. Select all practices consistent with the handling requirements.

  1. A

    Have recovered refrigerant reclaimed before resale when ownership changes.

  2. B

    Mix different refrigerants to make a single reusable supply.

  3. C

    Identify and label refrigerant and cylinders clearly.

  4. D

    Keep refrigerants separate to avoid creating mixed or unidentified refrigerant.

13
Open ended
1 point

A technician sees a pressure reading that seems inconsistent with expectations and considers replacing the refrigerant with a different product as a quick fix. Explain why the reading must be interpreted in context and why using a substitute as a drop-in replacement is unsafe or unreliable.

14
Choose one
1 point

A technician is assessing the environmental effects of R-134a. Which statement is accurate?

  1. A

    It depletes ozone but has no climate impact.

  2. B

    It does not deplete ozone, but it can still have climate impact.

  3. C

    It has no ozone or climate impact.

  4. D

    It depletes ozone only when used in a low-pressure appliance.

15
Choose one
1 point

During service on stationary equipment, a technician proposes intentionally releasing a covered refrigerant because the work area is ventilated. Which response best reflects Section 608 requirements?

  1. A

    It is allowed if the refrigerant has zero ozone-depletion potential.

  2. B

    It is allowed if the equipment is being repaired rather than disposed of.

  3. C

    It is generally prohibited, subject only to narrow exceptions.

  4. D

    It is allowed if the work area is well ventilated.

16
Choose one
1 point

Which refrigerant classification applies to R-12?

  1. A

    CFC

  2. B

    HCFC

  3. C

    HFC

17
Choose one
1 point

Which process reprocesses refrigerant to the applicable purity standard and verifies it using the required analysis?

  1. A

    Recover: remove refrigerant into an external container without requiring it to be tested or cleaned.

  2. B

    Recycle: reprocess refrigerant to the applicable purity standard and verify it using the required analysis.

  3. C

    Reclaim: reprocess refrigerant to the applicable purity standard and verify it using the required analysis.

18
True or false
1 point

After service, a technician uses a vacuum pump to remove air and moisture from the system. This is distinct from recovering refrigerant into a cylinder.

  1. A

    True

  2. B

    False

19
Written response
1 point

What gas should be used to pressure-test a refrigeration system?

20
Written response
1 point

A technician cleans recovered refrigerant so it can be reused in equipment owned by the same person, but does not process it to the full reclamation standard. What is this process called?