Liquid State

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

2.       Define aqueous tension. Why is it subtracted from the total pressure to determine the pressure

           of a dry gas?
3.       What is evaporation? How does it differ from boiling?
4.       Define coefficient of viscosity. How coefficient of viscosity is related with viscous force?
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