Questions in Mechanical Properties of Fluids

Select	Question
	Coatings used on raincoat are waterproof because
	If temperature increases, the surface tension of a liquid
	A drop of oil is placed on the surface of water. Which of the following statement is correct
	The temperature at which the surface tension of water is zero
	A small air bubble is at the inner surface of the bottom of a beaker filled with cold water. Now water of the beaker is heated. The size of bubble increases. The reason for this may be
	The spiders and insects move and run about on the surface of water without sinking because
	Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because
	Hairs of shaving brush cling together when it is removed from water due to
	A square frame of side L is dipped in a liquid. On taking out, a membrane is formed. If the surface tension of the liquid is T, the force acting on the frame will be
	Water does not wet an oily glass because