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Free Practice Quiz Question List

4 Refrigerant Safety and Proper Handling Online Quiz Questions

Use this free practice quiz with 20 questions to review 4 Refrigerant Safety and Proper Handling, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Before servicing an unfamiliar system, which approach best identifies the refrigerant and its hazards?

  1. A

    Identify the refrigerant from the cylinder color, then begin work.

  2. B

    Check the equipment nameplate, cylinder label, and SDS before service.

  3. C

    Use the system pressure reading to identify the refrigerant.

  4. D

    Assume the refrigerant is the same as the one used in similar equipment.

02
Choose one
1 point

A technician sees a pressure reading that seems familiar. Which conclusion is justified by that reading alone?

  1. A

    A pressure reading directly measures the refrigerant charge, regardless of temperature.

  2. B

    A pressure reading proves the system is safe if it is within a familiar range.

  3. C

    Pressure depends on refrigerant and temperature; a reading alone proves neither charge nor safety.

  4. D

    Pressure depends only on the equipment size, not the refrigerant.

03
Choose one
1 point

A technician cannot confirm whether a hose is rated for the system pressure and refrigerant. What should the technician do?

  1. A

    Do not connect the equipment until its pressure rating and refrigerant compatibility are confirmed.

  2. B

    Connect it briefly and watch for signs of a problem.

  3. C

    Use it if its fittings can be attached to the system.

  4. D

    Connect it only if the system pressure currently appears low.

04
True or false
1 point

True or false: Refrigerant that has been recovered is automatically ready for reuse or sale.

  1. A

    True

  2. B

    False

05
True or false
1 point

True or false: Applicable federal refrigerant rules can vary by equipment type, refrigerant, charge size, and activity.

  1. A

    True

  2. B

    False

06
Written response
1 point

What EPA term means removing refrigerant from an appliance and storing it in an external container without necessarily processing it?

07
Written response
1 point

Which Clean Air Act section generally governs motor-vehicle air-conditioning (MVAC) service? Enter the section number only.

08
Choose all
1 point

A technician is preparing to work with a refrigerant that may be flammable in a service area that includes an enclosed, low-lying space. Select all appropriate precautions.

  1. A

    Use required monitoring and ventilation, and do not enter a potentially oxygen-deficient space without proper training and entry controls.

  2. B

    Rely on odor to warn you if vapor is accumulating.

  3. C

    Keep ignition sources away when working with flammable refrigerants.

  4. D

    Work in a well-ventilated area.

09
Choose all
1 point

When recovering refrigerant into a cylinder, which practices are appropriate? Select all that apply.

  1. A

    Use a recovery cylinder compatible with the refrigerant and properly rated for the application.

  2. B

    Keep different refrigerants separate rather than mixing them in a cylinder.

  3. C

    Fill to the cylinder’s marked limit and then add a little more if the cylinder still feels stable.

  4. D

    Weigh the cylinder during filling and never exceed its marked fill limit or applicable requirements.

10
Open ended
1 point

A significant refrigerant release occurs in a work area, and a coworker may have been exposed to cold liquid. Describe the immediate actions to protect people and address possible serious exposure.

11
Choose one
1 point

A technician needs to investigate a suspected leak at a fitting. Which method is appropriate?

  1. A

    Pass an open flame along joints to reveal escaping refrigerant.

  2. B

    Use an appropriate electronic detector or approved bubble solution and follow its instructions.

  3. C

    Add refrigerant repeatedly until system performance improves.

  4. D

    Use any detector available without checking whether it is suitable for the refrigerant.

12
Choose one
1 point

A service procedure calls for pressure-testing a refrigeration system. Which choice follows safe handling guidance?

  1. A

    Use oxygen because it is readily available and nonflammable.

  2. B

    Use compressed air if the system is empty of refrigerant.

  3. C

    Use the method and gas specified by the manufacturer and applicable procedures.

  4. D

    Use whichever gas produces the desired pressure most quickly.

13
Choose one
1 point

When working where refrigerant vapor could displace oxygen, which precaution is appropriate?

  1. A

    Rely on odor to determine whether the air is safe.

  2. B

    Use required monitoring and ventilation, and do not enter a potentially oxygen-deficient space without proper training and entry controls.

  3. C

    Work without ventilation if the refrigerant is not visibly leaking.

  4. D

    Use a flame to check whether refrigerant vapor is present.

14
True or false
1 point

Liquid refrigerant contacting skin can cause frostbite.

  1. A

    True

  2. B

    False

15
Written response
1 point

What EPA term means reprocessing refrigerant to the applicable purity standard and verifying that it meets that standard?

16
Choose one
1 point

Which storage arrangement best follows safe practices for refrigerant cylinders?

  1. A

    Store cylinders lying down in a warm room so their contents remain at a stable temperature.

  2. B

    Store cylinders upright but leave them unsecured for quick access.

  3. C

    Store cylinders upright and secured in a dry, well-ventilated place away from excessive heat and physical damage.

  4. D

    Store full and empty cylinders together without labels to simplify inventory.

17
Choose one
1 point

You find visible oil near a refrigeration-system joint, but there is no other clear evidence of a leak. What should you do?

  1. A

    Treat the oil as conclusive proof and add refrigerant immediately.

  2. B

    Investigate the area systematically using a suitable detector or approved bubble solution.

  3. C

    Use a flame at the joint to see whether the refrigerant ignites.

  4. D

    Ignore the clue unless the system stops operating completely.

18
Written response
1 point

Which Section 608 certification type covers all equipment? Enter the certification type name.

19
Fill in the blank
1 point

A technician is working where liquid refrigerant could splash. In addition to appropriate gloves, the technician should use suitable protective clothing and as indicated by the SDS and risk assessment.

20
Fill in the blank
1 point

After cold liquid refrigerant contacts a worker’s skin, follow the SDS and workplace first-aid procedure. Do not the affected area.