Select the correct order of evaporation for water, alcohol, petrol and kerosene oil.

Water > alcohol > kerosene oil > petrol

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Alcohol > petrol > water > kerosene oil

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Petrol > alcohol > water > kerosene oil

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Petrol > alcohol > kerosene oil > water.

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Solution

The correct option is D Petrol > alcohol > kerosene oil > water.
Order of interparticle forces of attractions is Petrol < alcohol < kerosene oil < water.
Petrol or gasoline, evaporates faster than most liquids because of its weak interparticle attractions. Petrol is a mixture of hydrocarbons. Hydrocarbons have very weak interparticle attractions. In comparison, water evaporates more slowly than petrol. That's because water particles (molecules) have strong interparticle (intermolecular) attractions among themselves. Hence, water particles require more energy to overcome their attraction and evaporate.

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