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

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Solution

Given that the melting point of a non-sublimable solid is $100^{o} C$ .When a small piece of this solid is taken in a test tube and placed in boiling water. Then the solid remains as it is.
The transmission of heat takes place as long as the temperature of solid is below $0^{o} C$ .
Now, as soon as the temperature of solid will reach $100^{o} C$ then transmission of the heat from water the solid will stops. Hence, it does not melt.

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

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