1.

In stratosphere, which of the following radical retards the formation of `O_(3)`?A. `overset(.)CH_(3)`B. `overset(.)Cl`C. `overset(.)F`D. `Cl_(2)`

Answer» Correct Answer - B
`overset(.)(C)l` radical obtained from `CFCs` reacts with `O_(3)` present in stratosphere.
`CF_(2)Cl_(2)(g) overset(UV)(rarr) overset(.)(C )(g) + CF_(2)overset(.)(C )l(g)`
`overset(.)(C )l(g)+O_(3)(g) rarr Cl overset(.)(O)(g)+O_(2)(g)`
`Cl overset(.)(C )l(g)+O_(3)(g) rarr Cl overset(.)(O)(g)+O_(2)(g)(O)(g)+O(g) rarr overset(.)(C )l(g)+O_(3)(g) rarr Cl overset(.)(O)(g)+O_(2)(g)(C )ll(g)+O_(2)(g)`.


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