Molar Conductivities and their Variation with Concentration NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Molar Conductivities and their Variation with Concentration MCQ Questions


7.
For weak electrolytes, Λm increases sharply on dilution because of
A.
Increased ionization
B.
Decreased conductivity
C.
Increased viscosity
D.
Decreased volume
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ANSWER :
A. Increased ionization
8.
Kohlrausch’s law is applicable for
A.
Weak electrolytes only
B.
Strong electrolytes only
C.
All electrolytes
D.
None of these
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ANSWER :
C. All electrolytes
9.
Equivalent conductivity and molar conductivity are equal for
A.
Normal solution
B.
0.1 M solution
C.
1 N solution
D.
Monovalent electrolytes
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ANSWER :
D. Monovalent electrolytes
10.
Λm is maximum for which of the following at infinite dilution?
A.
HCl
B.
CH₃COOH
C.
NaOH
D.
CH₃COONa
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ANSWER :
A. HCl
11.
Which is true for molar conductivity?
A.
It increases with concentration
B.
It decreases with dilution
C.
It increases with dilution
D.
It remains constant with dilution
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ANSWER :
C. It increases with dilution
12.
Unit of conductivity is
A.
S cm⁻¹
B.
S mol⁻¹
C.
S mol⁻²
D.
S cm
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ANSWER :
C. S mol⁻²