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| Q. |
Ozone layer is present in - |
| A. | Troposphere |
| B. | Ionosphere |
| C. | Stratosphere |
| D. | Exosphere |
| Answer» C. Stratosphere | |
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Explanation: The ozone layer is mainly found in the lower portion of the stratosphere from approximately 20 to 30 kilometres above Earth, though the thickness varies seasonally and geographically. Generally, it is smaller near the equator and larger towards the poles. It also varies with season, being in general thicker during the spring and thinner during the autumn in the northern hemisphere. |
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