Which of these is a colligative property?

Lowering of vapor pressure

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Relative lowering of vapor pressure

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Osmotic pressure

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All of the above

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Solution

The correct options are
B Relative lowering of vapor pressure
C Osmotic pressure
Relative lowering of vapor pressure is a colligative property.
But just lowering of vapor pressure is not a colligative property.
A colligative property depends only on the number of moles of solute particles present in the solution.

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