The meniscus of a liquid that wets glass is
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ASSALAMUALAIKUM
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When liquid water is confined in a tube, its surface (meniscus) has a concave shape because water wets the surface and creeps up the side. Mercury does not wet glass - the cohesive forces within the drops are stronger than the adhesive forces between the drops and glass.
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Meniscus is the curve of the upper surface in any liquid. Curving can be convex or concave. ... So when water is placed into a glass container, surface tension attracts the water molecules to the sides of the glass and because adhesion overcomes the forces of cohesion the water climbs the glass slightly.
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