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| Q. |
Hailstorms are caused due to – |
| A. | condensation |
| B. | convection |
| C. | sublimation |
| D. | freezing |
| Answer» D. freezing | |
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Explanation: In a hailstorm, small ice particles that form above the freezing level (which occurs in all thunderstorms) collect either rain water or cloud water on them, forming a water shell that freezes. The tilted updraft and downdraft structure of the storm is important in order for hailstones to grow because they can be `recycled' several times, until they either become too largefor the updraft to carry them, or they get caught in a downdraft, and they finally reach the ground. |
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