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Colligative Properties

The colligati...

Question

The colligative property is not represented by:

A

elevation in boiling point

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B

osmotic pressure

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C

optical activlty

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D

relative lowering of vapour pressure

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Solution

The correct option is B optical activlty
Colligative properties are properties of solutions that depend upon the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the type of chemical species present. Optical activity is not dependent upon number of molecules of the compound, so it is not a colligative property.

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Q. Assertion :Osmotic pressure of

1 M

glucose is lesser than

1 M

N a C l (a q)

but vapour pressure of

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. Reason: Osmotic pressure is colligative property but vapour pressure is not colligative property however, lowering in V.P. is colligative property.

Q. Assertion :Lowering of vapour pressure is not dependent on the number of species present in the solution. Reason: Lowering of vapour pressure and relative lowering of vapour pressure are colligative properties.

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Relative lowering of vapour pressure is a colligative property.

Q. Assertion :Relative lowering of vapour pressure is equal to the mole fraction of the solvent
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Relative lowering of vapour pressure is a colligative property

Q. Assertion :Lowering of vapour pressure is directly proportional to osmotic pressure of the solution. Reason: Osmotic pressure is a colligative property.

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