Question
If a drop of water falls on a very hot iron, it does not evaporate for a long time, why?
✓
Answer
The main reason for this is that due to the formation of a thin layer of water vapour, the water drop becomes insulated from the not iron which is a insulator is nature. The drop does not evaporate for very long. If the drop does not fall on a very hot iron, it comes in direct contact with the iron and vaporizes immediately.
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