8. When some drops of water is added to bailing vegetable oil, it gets disposed either and that her varlat on but when we add some drops of a tot vegetable oil, it does not a dispersed.
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The surface tension of the water is more than that of oil. Therefore, when oil is poured over water, the greater value of surface tension of water pulls oil in all directions, and as such it spread on the water. On other hand, when water is poured over oil, it does not spread over it because the surface tension of oil being less than that of water, it is not able to pull water over it.
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