The heat energy required during the change of state from solid to liquid at constant temperature is called latent heat of .

fusion

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vaporisation

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freezing

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Solution

The correct option is A fusion
Latent heat of fusion is the heat energy that is absorbed by solid without showing any rise in temperature during change of state from solid to liquid. Since this energy is used for overcoming the inter-molecular force of attraction, the kinetic energy of the particles remains constant and hence there is no rise in temperature.

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The amount of heat required to convert unit mass of liquid into its vapour state without a change in its temperature called is latent heat of ___

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