Questions in Mechanical Properties of Fluids

Select	Question
	Radius of a soap bubble is increased from $R$ to $2R$ work done in this process in terms of surface tension is
	The work done in blowing a soap bubble of radius 0.2 m is (the surface tension of soap solution being 0.06 N/m)
	A liquid film is formed in a loop of area $0.05 m^2$. Increase in its potential energy will be (T = 0.2 N/m)
	In order to float a ring of area $0.04 m^2$ in a liquid of surface tension $75 N/m$, the required surface energy will be
	If two soap bubbles of equal radii r coalesce then the radius of curvature of interface between two bubbles will be
	A liquid does not wet the sides of a solid, if the angle of contact is
	The meniscus of mercury in the capillary tube is
	When the temperature is increased the angle of contact of a liquid
	The angle of contact between glass and mercury is
	A mercury drop does not spread on a glass plate because the angle of contact between glass and mercury is