Consider two hollow glass sphers, one containing water and the other containg mercury. Each liquid fills about one tenth of the volume of the sphere. In zero gravity environment :

Options

A. water and mercury float freely inside the spheres
B. water forms a layer on the glass while mercury floats
C. mercury forms a layer on the glass while water floats
D. water and mercury both form a layer on the glass.

Answer

B

Explanation

We know that cohesive force among necessary molecules is greater than adhesive force between glass and mercury molecules. Also adhesive force between water and glass molecules is greater than cohesive force among water molecules. So water forms a layer on glass white mercury floats.
So correct choice is (b).