Which of the following statement is not true about the phase change of a pure substance from solid to liquid?

It involves a change in potential energy.

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It involves no change in temperature.

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It involves a change in kinetic energy.

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It involves a change in entropy.

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It may occur at different temperatures for different compounds.

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Solution

The correct option is C It involves a change in kinetic energy.
When the solid state changes to liquid state, the particles starts to move here and there due to the increase in kinetic energy of the gases.
As solid state has less kinetic energy than the liquid state and liquid state has less kinetic energy than the solid state, when solid changes to liquid, there is change in kinetic energy.

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