1.

The melting point of a non-sublimable solid is 100^(@)C. What do you observe when small piece of this solid is taken in a test tube and placed in boiling water ?

Answer»

Solution :The solid REMAINS as it is. Water BOILS at `100^(@)`C. Transmission of heat takes place as LONG as thetemperature of the solid is below `0^(@)`C. As soon as the temperature of the solid reaches `100^(@)`C, transmissionof heat from water to the solid stops. HENCE, it does not melt.


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