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Explainwhy(a) Theangle of contact of mercury with glass is obtuse, while that of waterwith glass is acute.(b) Wateron a clean glass surface tends to spread out while mercury on thesame surface tends to form drops. (Put differently, water wets glasswhile mercury does not.)(c) Surfacetension of a liquid is independent of the area of the surface(d) Waterwith detergent dissolved in it should have small angles of contact.(e) Adrop of liquid under no external forces is always spherical in shape |
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Answer» Explain
(c) Surface (d) Water (e) A |
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