1.

Which of the following phenomena is based on the principle that cooling results due to evaporation ?

Answer»

formation of water drops on the surface of cold drink BOTTLE.
formation of crystals of ICE on the INNER surface of the lid of an ice cream box in freezer
white foggy appearance on the surface of large ice blocks
stretching out of tongues by dogs during summer

Solution :Doges stretch out their tongues duringsummer because the surface area fo thebodyfrom over-heatingduring summer. Thisis because they cannot sweat LIKE humna being . All otherphenomerna aer DUE to the condenstationof watervapourdue tovery low temperature.


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