Insects can walk on the surface of water. Why?
This is due to the existence of surface tension. The surface tension makes water surface to behave like an elastic membrane and prevents the insects from drowning.
Arrange ether, water and ethyl alcohol in order of decreasing intermolecular attractive forces.
The heat of vaporisation of water at 100°C is 40·6 kJ per mole and that of benzene at 80°C is 31kJ per mole. Which out of the two has stronger attractive forces ?
