Van’t Hoff Factor and its Significance NEET Questions

Physical Chemistry - Solutions

Van’t Hoff Factor and its Significance MCQ Questions


1.
What is the van’t Hoff factor (i) for a non-electrolyte solution?
A.
1
B.
2
C.
0
D.
Variable
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ANSWER :
A. 1
2.
Which of the following correctly defines the van’t Hoff factor?
A.
Ratio of observed colligative property to calculated property
B.
Ratio of theoretical molar mass to observed molar mass
C.
Ratio of observed molar mass to theoretical molar mass
D.
Both A and B
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ANSWER :
D. Both A and B
3.
The van’t Hoff factor for a completely dissociated KCl solution is:
A.
1
B.
2
C.
3
D.
4
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ANSWER :
B. 2
4.
Which of the following solutions will have the highest boiling point?
A.
1 M NaCl
B.
1 M K₂SO₄
C.
1 M C₆H₁₂O₆
D.
1 M AlCl₃
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ANSWER :
D. 1 M AlCl₃
5.
The van’t Hoff factor (i) for a compound which undergoes dissociation in one solvent and association in another solvent is respectively

NEET - 2016

A.
>1, <1
B.
<1, >1
C.
>1, >1
D.
<1, <1
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ANSWER :
A. >1, <1
6.
Which of the following statements is correct about van’t Hoff factor (i)?

NEET - 2017

A.
It is always greater than 1
B.
It accounts for the extent of association or dissociation of solutes
C.
It is used to calculate molarity
D.
It is only applicable to ideal solutions
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ANSWER :
B. It accounts for the extent of association or dissociation of solutes