Raoult’s Law NEET Questions

Physical Chemistry - Solutions

Raoult’s Law MCQ Questions


7.
Which type of solution shows a positive deviation from Raoult’s law?
A.
Ideal solution
B.
Non-ideal solution with weaker intermolecular forces
C.
Non-ideal solution with stronger intermolecular forces
D.
Colloidal solutions
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ANSWER :
B. Non-ideal solution with weaker intermolecular forces
8.
The relative lowering of vapour pressure is equal to the mole fraction of

NEET - 2016

A.
non-volatile solute
B.
non-volatile solvent
C.
volatile solute
D.
volatile solvent
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ANSWER :
A. non-volatile solute
9.
Which of the following shows a negative deviation from Raoult’s law?
A.
Methanol + Water
B.
Ethanol + Water
C.
Acetone + Chloroform
D.
Hexane + Heptane
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ANSWER :
C. Acetone + Chloroform
10.

In an ideal solution, the total vapor pressure is given by:

A.

PA + PB

B.

P°A + P°B

C.

XA P°A + XB P°B

D.

PA * PB

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ANSWER :

C. XA P°A + XB P°B

11.
Which of the following solutions obeys Raoult’s law?
A.
Benzene + Toluene
B.
Water + Ethanol
C.
Acetone + Chloroform
D.
HCl + H₂O
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ANSWER :
A. Benzene + Toluene
12.
In an ideal solution, the partial vapour pressure of each component is directly proportional to its

NEET - 2018

A.
molality
B.
mole fraction
C.
density
D.
volume
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ANSWER :
B. mole fraction