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Question

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

A
Water > alcohol > kerosene oil > petrol
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B
Alcohol > petrol > water > kerosene oil
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C
Petrol > alcohol > water > kerosene oil
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D
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.

The rate of evaporation would be inversely proportional to the intermolecular force of attraction. Hence, the order would be petrol > alcohol > kerosene oil > water.

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