1.

What is the shape of the meniscus observed when water and mercury are taken in two differentcapillary tubes and why ?

Answer»

Solution :Mercury shows a convex meniscus as it has higher COHESIVE forces than adhesive forces with glass. Water, on the other hand, shows a CONCAVE meniscus as the adhesive forces between water and glass are higher than the cohesive forces between water MOLECULES.


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