QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND
NEW VERSION!!
R-134a is a chlorine-free refrigerant - CORRECT ANSWER- True
MVAC systems being disposed must be evacuated to _____ of mercury before being scrapped -
CORRECT ANSWER- 4 inches
Ozone at ground level and at Stratosphere is a harmful pollutant - CORRECT ANSWER- False
Each chlorine ion can able to destroy ______ ozone molecules - CORRECT ANSWER- 100,000
Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants - CORRECT ANSWER-
Nov 15, 1995
For determining the Ozone Depletion Potential ________ having been assigned a factor of 1 -
CORRECT ANSWER- CFC-11
A refillable refrigerant cylinder must not be filled above ______ of its full capacity. - CORRECT
ANSWER- 80%
Ozone layer absorbs and scatters ________ from the sun - CORRECT ANSWER- Ultraviolet light
, An award of up to ______ may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting. - CORRECT ANSWER- $10,000
Since ________, it is no longer legal for CFCs to be manufactured or imported into the United
States - CORRECT ANSWER- Jan 1, 1996
Ester-based synthetic oils can be mixed with other oils - CORRECT ANSWER- False
Lifetime of CFCs is believed to range from _____ years - CORRECT ANSWER- 20-100
CFCs are highly reactive in _____ of atmosphere - CORRECT ANSWER- lower levels
At high temperaturesCFC-12 can decompose to form _______ - CORRECT ANSWER- hydrofluoric
acid and/or hydrochloric acid
The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the release
of ozone depleting substances. - CORRECT ANSWER- 1990
Non-condensables in a refrigeration system result in a _______ discharge pressure - CORRECT
ANSWER- Higher
Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and intended to
be returned to, a mobile air-conditioning system cannot exceed _______ PPM by weight. -
CORRECT ANSWER- 15
Refrigerants are lighter than the air: - CORRECT ANSWER- False