When heat is constantly supplied by a gas burner with small flame to melt ice, then the temperature of ice during melting

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Increases to form liquid water

First remains constant and then increases

Does not increase at all

Increases very slowly

answer is B.

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Detailed Solution

When heat is constantly supplied by a gas burner with a small flame to melt ice, then the temperature of ice during melting does not increase at all.
The temperature at which ice conversion to water occurs is called the melting point of ice. The temperature remains constant when the melting of ice takes place. However, this energy is used to convert water, whose physical state is solid, to a liquid state which is water. The usage of this stirred energy is called the latent heat of fusion. The melting point of pure ice is 0°C at a pressure of 76 cm mercury. The temperature does not rise as all available heat energy is used to increase the kinetic energy of the water molecules so that it obtains an intramolecular space comparable to liquid water at the same temperature.

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