EPA 608 Core Test Sample Questions And Answers All Verified

EPA 608 Core Test Sample Questions And Answers All Verified As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - ANS a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolet (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth c. Thin layer of CFC and HCFC in the atmosphere that filters UV. d. Protective layer that shields UV in the Troposphere - ANS b. Protective shield for Earth from the sun's harmful ultraviolet (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth The atom found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is? a. Fluorine b. Carbon c. Hydrogen d. Chlorine - ANS d. Chlorine What is an ozone molecule made of? a. Refrigerant b. Ammonia c. Three oxygen atoms (O3). d. Oxygen and ammonia. - ANS Three oxygen atoms (O3). Which refrigerant is a CFC? a. R-134A b. R-123 c. R-22 d. R-12 - ANS d. R-12 What is the name of the atom that attacks ozone molecules? a. CFC atoms b. HCFC atoms c. Chlorine and bromine atoms emitted into the atmosphere d. a and b - ANS c. Chlorine and bromine atoms emitted into the atmosphere Which refrigerant is a HFC? a. R-134A b. R-123 c. R-22 d. R-12 - ANS a. R-134A