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