Question

give one example of the diffusion of a solid in another solid?​

Answer 1

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Explanation:

Alloy of metals is an example of the diffusion of a solid in another solid.

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Answer 2

Candles get day or attached due to warm term. if we write something on blackboard and leave it uncleaned for a considered period of time (say,at least 10 to 15 days) ,we will find that it becomes quite difficult to clean the blackboard afterwards.this is due to the fact that some of the particles of chalk have diffused into the surface of blackboard.