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The aerosol is a kind of colloid in which:

1. solid is dispersed in gas
2. gas is dispersed in solid
3. gas is dispersed in liquid
4. liquid is dispersed in water

Correct answer: solid is dispersed in gas

Solution

An aerosol consists of tiny solid particles or liquid droplets suspended in a gas, which allows it to remain dispersed in the air, making option A the correct choice.

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