The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

A. Decrease in enthalpy corresponding to evolution of heat

B. Decrease of entropy

C. Increase in enthalpy corresponding to absorption of heat

D. No change in enthalpy

Answer: Option C

Solution(By Examveda Team)

During fusion process the heat is absorbed by the solid to convert to liquid leading to increase in enthalpy.