1.

The graph shows the variation of temperature (T) of one kilogram of a material with the heat (H) supplied to it. At O, the substance is in the solid state. From the graph, we can conclude that

A.            \[{{T}_{2}}\] is the melting point of the solid
B.            BC represents the change of state from solid to liquid
C.            \[({{H}_{2}}-{{H}_{1}})\] represents the latent heat of fusion of the substance
D.            \[({{H}_{3}}-{{H}_{1}})\] represents the latent heat of vaporization of the liquid
Answer» D.            \[({{H}_{3}}-{{H}_{1}})\] represents the latent heat of vaporization of the liquid


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