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A solid material is supplied with heat at constant rate and the temperature of the material changes as shown. From the graph , the false conclusion drawn is

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AB and CD of the graph represent phase changes

latent heat of fusion is twice the latent heat of vaporisation

CD represents change of state from liquid to vapour

AB represents the change of state from solid to liquid

answer is C.

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Detailed Solution

AB and CD represent phase changes of solid to liquid and liquid to vapour respectively. It can't be said that latent heat of fusion is twice that of latent heat of vaporization from the graph.

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