A) Ozone
B) \[C{{O}_{2}}\]and\[CO\]
C) \[S{{O}_{3}}\]and\[CO\]
D) \[S{{O}_{2}}\]and nitrogen oxide
Correct Answer: D
Solution :
Acid rain is caused by large scale emission of nitrogen oxides\[(N{{O}_{x}}),\]sulphur oxides\[(S{{O}_{x}}),\] volatile organic carbons and\[HCl\]from thermal power plants, industries and automobiles. Oxides of nitrogen and sulphur combine with water and oxygen and form nitric acid and sulphuric acid, respectively. \[2NO+\frac{3}{2}{{O}_{2}}\xrightarrow[{}]{{}}{{N}_{2}}{{O}_{5}}\] \[{{N}_{2}}{{O}_{5}}+{{H}_{2}}O\xrightarrow[{}]{{}}\underset{(Nitric\text{ }acid)}{\mathop{2HN{{O}_{3}}}}\,\] \[2S{{O}_{2}}+{{O}_{2}}\xrightarrow[{}]{{}}2S{{O}_{3}}\] \[2S{{O}_{3}}+2{{H}_{2}}O\xrightarrow[{}]{{}}\underset{(Sulphuric\text{ }acid)}{\mathop{2{{H}_{2}}S{{O}_{4}}}}\,\]
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