Colligative Properties of Dilute Solutions (a Relative Lowering of Vapour Pressure, Depression of Freezing Point...) NEET Questions

Physical Chemistry - Solutions

Colligative Properties of Dilute Solutions (a Relative Lowering of Vapour Pressure, Depression of Freezing Point...) MCQ Questions


1.
Which of the following is NOT a colligative property?
A.
Boiling point elevation
B.
Freezing point depression
C.
Osmotic pressure
D.
Viscosity
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ANSWER :
D. Viscosity
2.
Which of the following statements about colligative properties is correct?
A.
They depend on the identity of the solute
B.
They depend only on the number of solute particles
C.
They depend on the shape of solute molecules
D.
They depend on the color of the solution
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ANSWER :
B. They depend only on the number of solute particles
3.
Which one of the following aqueous solutions will have the lowest freezing point?

NEET - 2020

A.
0.1 m NaCl
B.
0.1 m urea
C.
0.1 m glucose
D.
0.1 m MgCl₂
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ANSWER :
D. 0.1 m MgCl₂
4.
Which colligative property is used to determine the molecular mass of a solute?
A.
Boiling point elevation
B.
Freezing point depression
C.
Osmotic pressure
D.
All of the above
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ANSWER :
D. All of the above
5.
Which colligative property is most suitable for the determination of molecular mass of macromolecules?
A.
Boiling point elevation
B.
Freezing point depression
C.
Osmotic pressure
D.
Relative lowering of vapor pressure
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ANSWER :
C. Osmotic pressure
6.
What is the effect of adding a non-volatile solute to a solvent?
A.
Vapor pressure increases
B.
Vapor pressure decreases
C.
Boiling point decreases
D.
Freezing point increases
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ANSWER :
B. Vapor pressure decreases