Question
Define heat conduction and coefficient of thermal conductivity.

Answer

Heat conduction : The process of energy transfer from one part of a solid to another at lower temperature without actual movement of molecules in called heat conduction.
Coefficient of Thermal Conductivity : The flow of heat energy per second from opposites faces of unit positive when the opposite faces are at a temperature difference of one $\text K$ or $1^{\circ}\text C $ at a unit distance is called coefficient of thermal conductivity.

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