For a given cell, a 0.1 molar solution has a resistance of \(20 \ \Omega\) and molar conductivity of \(0.154 \times 10^{-3} S~cm^2~mol^{-1} \).
The value of the cell constant is:
1. \(3.08 \times 10^{-7} cm^{-1}\) 2. \(30.8 \times 10^{-7} cm^{-1}\)
3. \(0.308 \times 10^{-9} cm^{-1}\) 4. \(4.08 \times 10^{-6} cm^{-1}\)
Subtopic:  Conductance & Conductivity |
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The decreasing order of electrical conductivity of the following aqueous solutions is :
0.1 M Formic acid (A),
0.1 M Acetic acid (B),
0.1 M Benzoic acid (C)

1. A > B > C

2. A > C > B

3. C > B > A

4. C > A > B

Subtopic:  Conductance & Conductivity |
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Resistance of 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.3 S m-1. If the resistance of the 0.4 M solution of the same electrolyte is 260 Ω, its molar conductivity is:
1. 6.25×104Sm2mol1
2. 625×104Sm2mol1
3. 62.5Sm2mol1
4. 6250Sm2mol1

Subtopic:  Conductance & Conductivity |
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The resistivity of a 0.8 M solution of an electrolyte is 5×10−3 Ω cm. If λm is 2.5×10x,
the value of x is:
1. 4
2. 8
3. 5
4. 9
Subtopic:  Conductance & Conductivity |
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The limiting molar conductivities of a divalent cation \(\left(\mathrm{M}^{2+}\right)~\)and a monovalent anion \(\left(\mathrm{A}^{-}\right)~\)are \(57 \mathrm{~S} \mathrm{~cm}^2\) \( \mathrm{mol}^{-1}\) and \(73 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\) respectively. What is the limiting molar conductivity of their compound in \(\mathrm{S}~ \mathrm{cm}^2 \mathrm{~mol}^{-1}\)?

1. 203 
2. 421
3. 143 
4. 303
Subtopic:  Conductance & Conductivity |
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The graph represents the variation of molar conductance (\(\Lambda_m\)) with the square root of concentration (\(\sqrt{C}\)​) for two electrolytes, 'A' and 'B'. Based on the graph, the nature of both electrolytes is:

1. A → Strong Electrolyte, B→ Strong Electrolyte
2. A → Weak Electrolyte, B → Strong Electrolyte
3. A → Strong Electrolyte, B → Weak Electrolyte
4. A → Weak electrolyte, B → Weak Electrolyte
Subtopic:  Conductance & Conductivity |
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Determine the cell constant of a conductivity cell containing a 0.01 M KCl solution at 298 K. The given data includes a resistance of 1750 Ω and a conductivity of 0.152×10−3 S cm−1.

1. \(266 \times 10^{-3} \mathrm{~m}^{-1}\) 2. \(166 \times 10^{-3} \mathrm{~cm}^{-1}\)
3. \(266 \times 10^{-3} \mathrm{~cm}^{-1}\) 4. \(166 \times 10^{-3} \mathrm{~m}^{-1}\)
Subtopic:  Conductance & Conductivity |  Kohlrausch Law & Cell Constant |
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Given below are two statements : 
Statement I  For \(\mathrm{Kl},\) molar conductivity increases steeply with dilution.
Statement II  For carbonic acid, molar conductivity increases slowly with dilution.
In the light of the above statements, choose the correct answer from the options given below :
1. Statement I is incorrect and Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct and Statement II is incorrect.
Subtopic:  Conductance & Conductivity |
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