Question

How boiling is different from evaporation give 2 points
What is diffusion what are factors on which rate of diffusion depends
After rain wet roads dry quickly why
How does perspiration or sweating help in keeping our body cool in hot day
Define melting and boiling point
Why clothes dry faster when we spread them

Answer 1

Evaporation usually occurs on the surface. Evaporation may occur when the partial pressure of vapor of a substance is less than the equilibrium vapour pressure. Boiling is a phase transition from the liquid phase to gas phase that occurs at or above the
boiling temperature.

Answer 2

Boiling.....boiling takes place at boiling point of liquid. .....Boiling is an bulk phenomenon.


evaporation.... evaporation takes place on its own at any temperature below the boiling point...... evaporation is a surface phenomenon.