Abnormal Value of Molar Mass NEET Questions

Physical Chemistry - Solutions

Abnormal Value of Molar Mass MCQ Questions


7.
For acetic acid in benzene, the van't Hoff factor (i) is observed to be:
A.
1
B.
<1
C.
>1
D.
Infinity
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ANSWER :
B. <1
8.
The association of molecules in a solution leads to a van't Hoff factor (i) of:
A.
>1
B.
1
C.
<1
D.
0
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ANSWER :
C. <1
9.
Which colligative property is most affected by abnormal molar mass?
A.
Boiling point elevation
B.
Freezing point depression
C.
Osmotic pressure
D.
All of these
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ANSWER :
D. All of these
10.
If the van't Hoff factor (i) for a solute is greater than 1, the solute is:
A.
Undergoing association
B.
Undergoing dissociation
C.
Not undergoing any change
D.
Behaving as a non-electrolyte
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ANSWER :
B. Undergoing dissociation
11.
When acetic acid is dissolved in benzene, it forms dimers due to:
A.
Van der Waals forces
B.
Ionic bonding
C.
Hydrogen bonding
D.
Covalent bonding
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ANSWER :
C. Hydrogen bonding
12.
If K₂SO₄ undergoes complete dissociation in water, the van't Hoff factor (i) will be:
A.
2
B.
3
C.
1
D.
4
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ANSWER :
B. 3