Liquid State

 1.       Name the physical property behind rise of liquids in capillary tube.

            of a dry gas?
      4.       Define coefficient of viscosity. How coefficient of viscosity is related with viscous force?
      6.       Why is a mercury droplet spherical?
      9.       What do you understand by viscosity?
    10.   What is the efect of  temperature on: (a) Surface tension (b) Viscosity (c) Vapour pressure of liquid
    15.   Give reason:
a)      Falling liquid drops are spherical
b)      Evaporation takes place from the surface of liquid
c)       It is more efficient to wash clothes in hot water than cold water