question_answer

  With the help of an activity show that the rate of evaporation increases with increase in surface area.

Answer:

                  Take approximately 50 mL of hot tea or water in a cup and also the same quantity of the same hot liquid in a saucer too. It is observed that the liquid in the saucer cools faster than that in the cup. This happened due to increase in the surface area of the liquid in the saucer as compared to the cup. This proved that rate of evaporation increases with increase in surface area.       (2)