A) \[S{{O}_{2}},\text{ }N{{O}_{3}}\]
B) \[CFC,\text{ }C{{H}_{4}},\text{ }{{N}_{2}}O\]
C) \[CO,\text{ }C{{H}_{4}},\text{ }{{\text{O}}_{2}}\]
D) \[N{{O}_{2}},\text{ }C{{O}_{2}}\]
Correct Answer: B
Solution :
Ozone layer present in stratosphere protect the animals from UV-radiations of sun light. In stratosphere ozone is being formed and photo dissociated. The chlorofluorocarbons methane and nitrous oxide cause depletion of ozone layer \[S{{O}_{2}}\]and \[N{{O}_{3}}\]react with the moisture (water vapour) of atmosphere and from \[{{H}_{2}}S{{O}_{4}}\] and \[HN{{O}_{3}}\] respectively, the \[{{H}_{2}}S{{O}_{4}}\] and \[HN{{O}_{3}}\] cause acid rain High concentration of \[C{{O}_{2}}\] in the atmosphere results in green-house effect i.e., the \[C{{O}_{2}}\]layer, allowing solar radiation to pass in but preventing long wave heat radiation to pass out \[C{{O}_{2}}\] (carbon monoxide) is produced due to incomplete combustion metallurgical operations and naturally by plants as well as animals. The high concentration of CO resulting in giddiness, headache, decreased vision cardiovascular malfunction and as phyxia Nitrogen oxides \[(N{{O}_{2}},{{N}_{2}}O,{{N}_{2}}{{O}_{5}},NO)\] are produced naturally through biological and non-biological activities from nitrates, nitrites electric storms etc.
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