Van’t Hoff Factor and its Significance NEET Questions

Physical Chemistry - Solutions

Van’t Hoff Factor and its Significance MCQ Questions


7.
The van’t Hoff factor for BaCl₂ when completely dissociated in water is:
A.
1
B.
2
C.
3
D.
4
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ANSWER :
C. 3
8.
The value of van’t Hoff factor for an associated solute is:
A.
>1
B.
1
C.
<1
D.
Unpredictable
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ANSWER :
C. <1
9.
If 0.1 mol of a solute undergoes dimerization in 1 L solution and the degree of dimerization is 0.5, the van’t Hoff factor (i) is

NEET - 2018

A.
0.5
B.
0.75
C.
1
D.
1.5
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ANSWER :
B. 0.75
10.
Which of the following substances will have i < 1 in a non-polar solvent?
A.
NaCl
B.
KCl
C.
Acetic acid
D.
None of these
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ANSWER :
C. Acetic acid
11.
For a solution with i > 1, the solute undergoes:
A.
Association
B.
Dissociation
C.
No change
D.
Crystallization
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ANSWER :
B. Dissociation
12.
Which factor is used to account for the degree of dissociation or association of solutes in colligative properties?

NEET - 2024

A.
Boiling point elevation constant
B.
Osmotic pressure
C.
van’t Hoff factor
D.
Freezing point depression constant
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ANSWER :
C. van’t Hoff factor