Oil spreads over the surface of water whereas water does not spread over the surface of the oil, due to

Insect moves over surface of water because of a

By what mechanism does scent spread all over the room if the lid is opened ?

Rhizopus spread over the substratum by means of

Wester Ghats spreads over which states ?

Oil spreads on cold water but remains as drop on hot water.

When a drop of water is dropped on oil surface, then

An open Can of oil is accidently dropped into a lake; assume the oil spreads over the surface as a circular disc of uniform thickness whose radius increases steadily at the rate of 10 c m//s e c . At the moment when the radius is 1 meter, the thickness of the oil slick is decreasing at the rate of 4\ m m//s e c , how fast is it decreasing when the radius is 2 meters.

A drop of olive oil of radius 0.25 mm spreads into a circular film of diameter 20cm on the water surface. Estimate the size of the oil molecule.