While determining the melting point of ice, the thermometer is immersed in the beaker containing crushed ice. When heating the beaker on a low flame, what would happen to the temperature?

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A decrease first and then increase in the temperature during melting of ice

A decrease in temperature during melting of ice

Temperature remains constant during melting of ice

An increase in temperature during melting of ice

answer is D.

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Detailed Solution

While determining the melting point of ice, the thermometer is immersed in the beaker containing crushed ice. When heating the beaker on a low flame, the temperature of the ice still remains constant.
When the beaker containing crushed ice is heated, while determining the melting point of ice, the temperature remains constant because the heat that is given to the ice is utilised for changing the solid ice into liquid. The heat absorbed by the solid ice is used for breaking the intermolecular force among the particles and not for increasing the temperature of ice.

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