A solid material is supplied heat at a ...

A solid material is supplied heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does the slope of DE represent ?

AB and CD of the graph represent phase changes

AB represents the change of state from solid to liquid

Latent heat of fusion is twice the latent heat of vaporisation

CD represents change of state from liquid to vapour

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The correct Answer is:

Latent heat of fusion is smaller than the latent heat of vaporisation.

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