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Matter in Our Surroundings — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceMatter in Our Surroundings2 Marks
Question
Give one example of the diffusion of a solid in another solid.
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Answer

If two metal blocks are bound together tightly and kept undistributed for a few years, then the particles of one metal are found to have diffused into the other metal.

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