EPA Practice Test – Core #6

There is no temperature glide in an azeotropic mixture

The sale of CFC and HCFC refrigerants became restricted to certified technicians only after what date?

Refrigerants are ______ than air.

Refrigeration cylinders should not be transported in an upright position?

What kind of drier could be installed to trap any debris that may damage the compressor?

How many miles above sea level is a stratosphere located?

How many ports do recovery cylinders have?

We are protected from harmful ______ by the o-zone.

Which of the following is formed if moisture is allowed to remain in an operating refrigeration system

A person who gives details of intentional venting of refrigerants to the atmosphere are privy to a reward up to?

What are some factors that affect the speed and efficiency of evacuation?

Most refrigerant oils are not hygroscopic?

If they show signs of rust or appear to be compromised they should be reduced to ______  and discarded.

Which of the following colors can easily identify approved refrigerant recovery cylinders?

Which of the following is formed when R-12 & R-22 decompose a high temperature?

What is the process which removes the refrigerant in any condition from the system and stores it in an external container?

Refillable refrigerant cylinders must not be filled to exceed _____ of it’s capacity by weight.

What is the name of the chemical with collides with an ozone molecules and releases its oxygen atom?

Recovery cylinders are only used with refrigerant recovery cylinders are only used with virgin refrigerant.

Excessive pressure drops are a result of using long hoses.

Which agency must approve the refillable cylinders used for transporting recovered pressurized refrigerants?

How many oxygen atoms make up an ozone molecule how many oxygen atoms make up an ozone molecule

To ensure that the refrigerant has been removed from appliances before scrapping is the responsibility of the final person in the disposal chain.

Which of the following is used when leak testing an R134A system?

Vacuum lines should be in what proportion to the pump intake connection?