EPA Practice Test – Core #4

Which of the following will not cause an explosion when mixed with refrigerants?

What is the most effective method for checking small leaks?

The only two mandatory recovery refrigerants are CFCs HCFCs

What percentage of the ozone layer is occupied by the stratosphere?

What is the color of the center port of the service manifold hose?

What describes the weight of the smallest cylinder a 608-certified technician may purchase?

Up to how much award money is offered by the EPA to individuals who report information about technicians who intentionally vent refrigerants into the atmosphere against protocol?

Which of the following does not belong to the group?

Which of the following gases has the greatest capacity to determine a system’s leak?

What describes the process of cleaning the refrigerant for immediate use?

What number mixture of refrigerants suits the ternary blend refrigerants?

In which of the following refrigeration cycles is the condenser present?

What is measured by the compound gauge of the gauge manifold set?

In which of the following refrigeration cycles is the condenser present?

About how many miles from the earth’s surface does the stratosphere extend?

In new residential and small commercial heat pump and air conditioning systems, which of the following refrigerants is commonly used in place of R-22?

In what phase are refrigerants in the suction line?

When the saturation temperature in the evaporator causes the refrigerant to change from a liquid to a vapor _________ occurs.

To which refrigerant group does R-22 belong?

The rise in the amount of chlorine measured in the stratosphere over the past two decades matches the rise in which of the following elements?

When the refrigerant system is warmer than the cylinder, the refrigerant recovery rate will be

Which leak detector audits possible gas leakages?

Which of the following rules are enacted in the Clean Air Act?

What percentage of stratosphere chlorine comes from ozone depleting substances?

When was the Montreal Protocol substantially amended?