Raoult’s Law NEET Questions

Physical Chemistry - Solutions

Raoult’s Law MCQ Questions


1.
Raoult’s law is applicable to which type of solutions?
A.
Ideal solutions
B.
Non-ideal solutions
C.
Colloidal solutions
D.
Suspensions
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ANSWER :
A. Ideal solutions
2.
According to Raoult’s law, the relative lowering of vapor pressure is equal to:
A.
Mole fraction of solute
B.
Mole fraction of solvent
C.
Molarity
D.
Normality
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ANSWER :
A. Mole fraction of solute
3.
Raoult’s law is a special case of

NEET - 2016

A.
Henry’s law
B.
van’t Hoff’s law
C.
ideal solution law
D.
Dalton’s law
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ANSWER :
D. Dalton’s law
4.
What happens to the vapor pressure of a solvent when a non-volatile solute is added?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
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ANSWER :
B. Decreases
5.
The total vapor pressure of an ideal solution is given by:
A.
Raoult’s law
B.
Henry’s law
C.
Dalton’s law
D.
None of these
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ANSWER :
A. Raoult’s law
6.
Which of the following statements about Raoult’s law is incorrect?
A.
Vapor pressure is directly proportional to mole fraction
B.
It is applicable to ideal solutions
C.
Non-volatile solutes increase vapor pressure
D.
Total vapor pressure is the sum of partial pressures
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ANSWER :
C. Non-volatile solutes increase vapor pressure