manya's mother prepares tea for her father. she placed the cup of tea on the table but manya's father forgot to drink it. after sometimes, when he picked up the cup, he found it was cold.he asked manya's mother to heat it again.manya was curious to know, why did the tea cool down and how did it become hot when kept on a flame ???
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the cooling is the process of eveporation.
heating of tea is aproceas of heat
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