Correct option is A
The correct answer is: (A) Molecules of oil are non-polar
Explanation:
Oil molecules are non-polar, meaning they do not have a positive and negative end.
Water molecules, on the other hand, are polar, meaning they have a positive and negative end (dipole).
Since polar molecules (water) are attracted to other polar molecules, and non-polar molecules (oil) are attracted to other non-polar molecules, they do not mix with each other.
This results in oil and water not mixing and forming separate layers.
Information Booster:
Polar molecules like water have a strong intermolecular attraction due to the difference in charge between the hydrogen and oxygen atoms.
Non-polar molecules like oil lack such charge separation, so they do not interact effectively with polar molecules like water.
This property is why oil floats on water, as it is less dense and does not mix due to molecular interactions.
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