Define the latent heat of fusion. Why temperature remains constant during melting of ice ?

Ans. Latent heat of fusion is the amount of heat energy required to change 1kg of solid into liquid at its melting point.

During the process of melting of ice, the heat gets used up in changing the state by overcoming the forces of attraction between particles. Thus, there is no increase in the kinetic energy of the particles and hence temperature do not rise.

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