Explain why water has concave meniscus while mercury has convex meniscus when poured in a uniformly narrow glass tube ?

Explain why pure water has the maximum water potential.

Can you explain why the column of mercury first descends and then rises when a mercury in glass thermometers put in a flame?

Why has water higher vapour pressure than mercury ?

Explain why (a). The angle of contact of mercury with galss is obtuse, while that of water with glass is acute. (b). Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently, water wets glass while mercury does not). (c). Surface tension of a liquid is independent of the area of the surface (d). Water with detergent disolved in it should have small angles of contact. (e). A drop of liquid under no external forces is always spherical in shape.

Explain why water has high boling and melting points are compared to H_(2)S .