The amount of heat required by a substance to change its state without any change in temperature is called?

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Solution

Latent heat of fusion:
The latent heat of fusion is the change in enthalpy resulting from heating a given quantity of a substance to change its state from a solid to a liquid.
The temperature at which this occurs is the melting point.
Hence, the amount of heat required by a substance to change its state without any change in temperature is called latent heat of fusion.

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