Q32 of 160 Page 19

Explain why, the diffusion of a solid in another solid.

Diffusion takes place with slowest rate in the case of solids. The rate of diffusion is almost negligible in solids. Since the particles of solid have lowest kinetic energy so they do not move. Hence, diffusion is slowest in the case of solid.


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Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert.

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Give one example of the diffusion of a solid in another solid.

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Whish of the following diffuses fastest and which the slowest?

Solid, Liquid, Gas


Give reasons for your answer.

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Explain the following:

When an incense stick is lighted in the corner of room, its fragrance spreads quickly in the entire room.