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

Substance which is having low boiling point will evaporate faster
Boiling point of alcohol = 79 ^oC
Boiling point of petrol = 95 ^oC
Boiling point of water = 100 ^oC
Boiling point of kerosene = 150-300 ^oC
​Thus, Alcohol will evaporate first, and kerosene will evaporate at the last
Hence , Answer is (b)
Alcohol > Petrol > water > Kerosene.