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In the homogeneous nucleation, nucleation rate is maximum __________

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In the homogeneous nucleation, nucleation rate is maximum __________

(a) At freezing point

(b) Above boiling point

(c) Below melting point

(d) At room temperature

I have been asked this question by my college director while I was bunking the class.

The above asked question is from Nucleation, Growth and Segregation, Recovery, Recrystallisation and Grain Growth in portion Mechanical Working Processes & Phase Transformations of Engineering Material & Metallurgy

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Right choice is (c) Below melting point

For explanation I would say: From the free energy change diagram for homogeneous nucleation, it is seen that the rate of nucleation is affected by a change in temperature. It is maximum at a point below the melting point temperature.

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