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

Explanation:

option d is correct..

thanks

Answer 2

(b) alcohol > petrol > water > kerosene oil

Explanation:

A substance that has a lower boiling point will evaporate faster than another substance which has a higher boiling point.

Boiling point of alcohol = 79°C

Boiling point of petrol = 95°C

Boiling point of water  = 100°C

Boiling point of kerosene = 150-300°C

We find that Alcohol has the lowest boiling point, so it will evaporate first. Kerosene will evaporate the last as it has the highest boiling point.

Alcohol > Petrol > water > Kerosene.

Option B is the answer.