alleryMercury placed on any ordinary surface:
ASoaks into it
BSpreads on it
CDoes not wet it
DWets it fully
Answer & Solution
Correct answer: C. Does not wet it
1. Mercury molecules are held very strongly to one another.
2. The angle of contact with a solid comes out obtuse.
3. So mercury does not wet the surface it rests on.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._
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