Conductance in Electrolytic Solutions NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Conductance in Electrolytic Solutions MCQ Questions


7.
The relation 1 S m² mol⁻¹ equals how many S cm² mol⁻¹?
A.
10⁴
B.
10²
C.
10⁶
D.
10³
😑 View Answer Rough Work Error
ANSWER :
A. 10⁴
8.
If the conductivity of a 0.1 M KCl solution is 1.29 S m⁻¹, its molar conductivity (in S m² mol⁻¹) is:
A.
12.9
B.
1.29 × 10⁻²
C.
1.29 × 10⁻³
D.
129
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ANSWER :
B. 1.29 × 10⁻²
9.
The resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω. The conductivity of 0.001 M KCl at 298 K is 0.146 × 10⁻³ S cm⁻¹. The cell constant is:
A.
0.0973 cm⁻¹
B.
1.500 cm⁻¹
C.
0.219 cm⁻¹
D.
0.146 cm⁻¹
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ANSWER :
C. 0.219 cm⁻¹
10.
Resistance of a conductivity cell with 0.01 M KCl is 100 Ω, and with an unknown solution is 520 Ω in the same cell. If conductivity of 0.01 M KCl is 1.29 × 10⁻³ S cm⁻¹, the conductivity of the unknown solution is:
A.
2.48 × 10⁻⁴ S cm⁻¹
B.
1.29 × 10⁻⁴ S cm⁻¹
C.
6.71 × 10⁻³ S cm⁻¹
D.
2.48 × 10⁻³ S cm⁻¹
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ANSWER :
A. 2.48 × 10⁻⁴ S cm⁻¹
11.
Which of the following statements is INCORRECT about electrolytic conduction?
A.
It is due to movement of ions
B.
Conductivity increases with increase in metallic character of solute
C.
Conductivity increases with rise in temperature
D.
Conduction is accompanied by chemical change at electrodes
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ANSWER :
B. Conductivity increases with increase in metallic character of solute
12.
On increasing temperature, the conductance of a metallic conductor and an electrolytic solution respectively:
A.
Decreases, increases
B.
Increases, increases
C.
Increases, decreases
D.
Decreases, decreases
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ANSWER :
A. Decreases, increases