Question

Select the correct order of evaporation for water, alcohol, petrol and kerosene oil(a) Water alcohol kerosene oil petrol(b) alcohol petrol Water kerosene oil(c) petrol alcohol Water kerosene oil
(d) petrol alcohol kerosene oil Water

Answer 1

(d) Petrol alcohol kerosene oil Water

Answer 2

Answer:

The correct option is  Petrol > alcohol > kerosene oil > water.

Explanation:

• The rate of evaporation is inversely proportional to the intermolecular force of attraction.
• Intermolecular forces is the attractive and repulsive forces that arise between the molecules of a substance.
• The larger the intermolecular forces in a compound, the slower its evaporation rate. Water has stonger intermolecular force than kerosene, alcohol and Petrol. Hence its evaporation rate is lesser.
• Petrol has lowest intermolecular forces ,then alcohol ,kerosene and water.
• So the correct order of evaporation for water, alcohol, petrol and kerosene oil is Petrol > alcohol > kerosene oil > water.