What is the difference between a normal boiling point and standard boiling point ?

Vapour pressure of ether and alcohol is higher than water. Why?

Arrange water, benzene and acetone in order of increasing boiling point. 

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 ?

Why can a glass be filled above its rim with water?

Name two compounds which lower the surface tension of water.

Insects can walk on the surface of water. Why?

Why vegetables are cooked with difficulty at a hill station?

Arrange ether, water and ethyl alcohol in order of decreasing intermolecular attractive forces.

What is the effect of temperature on: (i) surface tension (ii) viscosity.