Ideal and Non-Ideal Solutions NEET Questions

Physical Chemistry - Solutions

Ideal and Non-Ideal Solutions MCQ Questions


7.
At the molecular level, ideal solutions form when:
A.
A-A, B-B, and A-B intermolecular forces are nearly equal
B.
A-B forces are much stronger than A-A and B-B
C.
A-B forces are much weaker than A-A and B-B
D.
Components do not interact at all
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ANSWER :
A. A-A, B-B, and A-B intermolecular forces are nearly equal
8.
Why does mixing two pure liquids generally lead to volume change?
A.
Because the temperature changes
B.
Because of chemical reaction between components
C.
Because A-B interactions differ from A-A and B-B interactions, altering molecular packing
D.
Because of evaporation of solvent
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ANSWER :
C. Because A-B interactions differ from A-A and B-B interactions, altering molecular packing
9.
Solutions of n-hexane and n-heptane behave nearly ideally because:
A.
Both are highly polar molecules
B.
They form strong H-bonds with each other
C.
They react chemically to form a new compound
D.
Both have similar non-polar London dispersion forces
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ANSWER :
D. Both have similar non-polar London dispersion forces
10.
Which of the following pairs forms a NEARLY IDEAL solution?
A.
Benzene and Toluene
B.
HNO₃ and Water
C.
Ethanol and Water
D.
Chloroform and Acetone
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ANSWER :
A. Benzene and Toluene
11.
Which mixture is an example of an ideal solution?
A.
Acetone + Aniline
B.
n-Hexane + n-Heptane
C.
Phenol + Aniline
D.
Ethanol + Acetone
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ANSWER :
B. n-Hexane + n-Heptane
12.
Bromoethane and chloroethane form:
A.
A nearly ideal solution
B.
Solution with negative deviation
C.
Maximum boiling azeotrope
D.
Solution with positive deviation
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ANSWER :
A. A nearly ideal solution