Which of the following statement is correct regarding CFC’s and HCFC’s?
I. These chemicals are inert, non-flammable, nontoxic, and lighter than air and can remain intact for years
II. CFCs are commonly used in Air-conditioners and the Refrigeration industry (Freon gas), aerosol propellants (in perfumes and deodorants), in the foam packaging industry (Styropor, Thermocol) and as solvents for greases and glues.
III. They contain Chlorine and Fluorine, common being CFC-ll, CFC-12, CFC-22 and CFC- 13.
(a) I & II (b) II & III (c) Only III (d) All the above