| Consider the following diseases from which human being are suffered, |
| (I) Asthma |
| (II) Dyspepsia |
| (III) Bronchitis |
| (IV) Emphysema |
| Diseases due to \[S{{O}_{2}}\] are |
A) I, III and IV
B) II, III and IV
C) I, II and III
D) Both I and IV
Correct Answer: A
Solution :
[a] Even low concentration of \[S{{O}_{2}}\] causes respiratory diseases as asthma, bronchitis, emphysema in human beings. Note: Irritation in eyes is also due to\[S{{O}_{2}}\]. Under high concentration of\[S{{O}_{2}}\], plants are affected and flowers fall off from plants. They are also decolourised due to reduction \[S{{O}_{2}}+2{{H}_{2}}O\to {{H}_{2}}S{{O}_{4}}+2H\] Nascent [H] causes reduction and colour fades.
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