Question

Why the temperature remains constant during melting?

Answer 1

HEY HERE IS YOUR ANSWER

During melting, the heat being added to a substance goes into breaking apart the "molecules" or breaking down the crystal lattice, not into raising the temperature. During the phase change all the molecules continue to have the same kinetic energy, and therefore the temperature remains constant

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Answer 2

at the time of change of state of an object, the heat absorbed present as latent heat in the molecules that reduces intermolecular force of attraction tend to change the state of object.

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