Question

Why does temperature remain constant during the change of state?

Answer 1

Answer:

Because during the change of state sme of the heat produced or you can say some or the energy produced is used up in changing the state of the substance

( like in changing solid to liquid some of the energy is used in overcoming the force of attraction of a solid so that it turns into liquid)

This heat is most likely the excess heat produced and is also known as latent heat.

Latent heat helps in the conversion of states of the matter

Answer 2

$\rm \underline{Required \: Answer:}$

It is due to the latent heat as the heat supplied to increase the temperature of the substance is used up to transform the state of matter of the substance hence the temperature stays constant. Hence the temperature remains constant as all the heat is used up and no external heat is released or absorbed.

@itzshivani