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Heat Transfer

Q1: Leidenfrost point is a term concerned with the

A condensation of the saturated vapor on a cold surface.

B concentration of a corrosive solution by evaporation.

C heat transfer between two highly viscous liquids.

D boiling of a liquid on a hot surface.

ANS:D - boiling of a liquid on a hot surface.

The Leidenfrost point is a term concerned with the boiling of a liquid on a hot surface. When a liquid is brought into contact with a surface that is significantly hotter than its boiling point, an insulating vapor layer can form between the liquid and the surface. This insulating vapor layer inhibits direct contact between the liquid and the surface, leading to reduced heat transfer and the phenomenon known as the Leidenfrost effect. Therefore, the correct option is: "boiling of a liquid on a hot surface."



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