A) No (nitric oxide) emission from supersonic jets
B) chlorofluoro carbon used as aerosols
C) Both (a) and (b)
D) None of the above
Correct Answer: C
Solution :
Main reason of\[{{O}_{3}}\]layer depletion is the release of chloro fluoro carbon compounds, called freons and emission of nitric oxide (NO) from supersonic jets. \[NO+{{O}_{3}}\xrightarrow[{}]{{}}N{{O}_{2}}+{{O}_{2}}\] \[C{{F}_{2}}C{{l}_{2}}\xrightarrow[{}]{UV}C{{l}^{\bullet }}+{{C}^{\bullet }}{{F}_{2}}Cl\] \[C{{l}^{\bullet }}+{{O}_{3}}\xrightarrow[{}]{{}}Cl{{O}^{\bullet }}+{{O}_{2}}\] \[C{{l}^{\bullet }}O+O\xrightarrow[{}]{{}}C{{l}^{\bullet }}+{{O}_{2}}\] The chlorine free radicals are contiguously regenerated and causes the breakdown of ozone.
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