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| Q. |
Ozone consists of - |
| A. | Oxygen only |
| B. | Oxygen and Nitrogen |
| C. | Hydrogen and Carbon |
| D. | Oxygen and Carbon |
| Answer» A. Oxygen only | |
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Explanation: Ozone (O3), or trioxygen, is a triatomic molecule, consisting of three oxygen atoms. It is an allotrope of oxygen that is much less stable than the diatomic allotrope (O2), breaking down with a half life of roughly 30 minutes in the lower atmosphere, to normal dioxygen. Ozone is formed from dioxygenby the action of ultraviolet light and also atmospheric electrical discharges, and is present in low concentrations throughout the Earth's atmosphere. |
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