The graph shows the variation of temperature | vedclass

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(C) In the heating curve,the horizontal regions represent phase changes where the temperature remains constant.$1$. In the region between $H_1$ and $H

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$(H_2 - H_1)$ represents the latent heat of fusion of the substance

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(C) In the heating curve,the horizontal regions represent phase changes where the temperature remains constant.$1$. In the region between $H_1$ and $H_2$,the temperature is constant at $T_1$. This indicates a phase change from solid to liquid. The heat absorbed during this process is $(H_2 - H_1)$,which is the latent heat of fusion.$2$. In the region between $H_3$ and $H_4$,the temperature is constant at $T_2$. This indicates a phase change from liquid to gas. The heat absorbed during this process is $(H_4 - H_3)$,which is the latent heat of vaporization.Therefore,option $(C)$ is correct because $(H_2 - H_1)$ represents the latent heat of fusion.

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

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