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This mock test of Test: Conductance- 2 for Chemistry helps you for every Chemistry entrance exam.
This contains 30 Multiple Choice Questions for Chemistry Test: Conductance- 2 (mcq) to study with solutions a complete question bank.
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*Multiple options can be correct

QUESTION: 1

Which of the following options are correct:

Solution:

*Multiple options can be correct

QUESTION: 2

The correct expressions between conc. mobility and molar conductivity are:

Solution:

*Multiple options can be correct

QUESTION: 3

Which of the following are correct:

Solution:

*Multiple options can be correct

QUESTION: 4

Which of the following expressions are correct:

Solution:

*Multiple options can be correct

QUESTION: 5

Which of the following plots are correct:

Solution:

*Multiple options can be correct

QUESTION: 6

The correct expressions of molar conductivity are:

Solution:

*Multiple options can be correct

QUESTION: 7

The correct expressions for dissociation constant of weak acid are:

Solution:

*Multiple options can be correct

QUESTION: 8

The correct expressions which explain the Debye-Huckel-Onsager Theory for strong electrolytes are

Solution:

*Multiple options can be correct

QUESTION: 9

The correct order of molar conductivities at infinite dilution are:

Solution:

*Multiple options can be correct

QUESTION: 10

The correct expressions for equivalent conductance are:

Solution:

**G is conductance and l is length.**

**We know that **

**Now, G(conductance) = KA/l => K = Gl/A and Veq = Al**

**So, (Gl/A)(Al) = Gl2 **

**Hence A and B are correct.**

*Multiple options can be correct

QUESTION: 11

Choose the correct statements:

Solution:

*Multiple options can be correct

QUESTION: 12

Choose the correct options:

Solution:

*Multiple options can be correct

QUESTION: 13

Which of the following will have same value of molar conductivity and equivalent conductivity:

Solution:

*Multiple options can be correct

QUESTION: 14

If = 73.5Ω^{-1}cm^{2} mol^{-1} = 189Ω^{-1}cm^{2} mol^{-1} and = 160Ω^{-1}cm^{2} mol^{-1} then:

Solution:

Potash alum is K_{2}SO_{4} · Al_{2}(SO_{4})_{3} · 24H_{2}O

On dilutionsions will be 2K^{+}, 2Al^{3+} and 4SO_{4}^{2–}

*Multiple options can be correct

QUESTION: 15

The unit of conductance is (are):

Solution:

*Multiple options can be correct

QUESTION: 16

The unit of conductivity is(are):

Solution:

**A and C are correct.**

**R = ρ l/A**

**ρ = RA/l**

**Units of ρ = Ω cm**

**σ = 1/ρ**

**Units of σ = Ω ^{-1} cm^{-1 }**

**Ω ^{-1} = S (Siemens)**

**Units of σ = S cm ^{-1 }**

QUESTION: 17

Choose the correct order of molar ionic conductivities of the following ions.

Solution:

*Multiple options can be correct

QUESTION: 18

For which of the following relation is correct:

Solution:

*Multiple options can be correct

QUESTION: 19

Choose the correct statements:

Solution:

QUESTION: 20

On dilution, the:

Solution:

*Answer can only contain numeric values

QUESTION: 21

The equivalent conductance of 0.01 M solution of K_{2}SO_{4} whose specific conductance is 1.26 × 10^{–3} Ω^{-1} cm^{-1} are ________ Ω^{-1}cm^{2} eq^{-1 }

Solution:

*Answer can only contain numeric values

QUESTION: 22

The conductivity of 0.1 M NaOH solution is 0.0221 Ω^{-1} cm^{-1}. When an equal volume of 0.1 M HCl is added, the conductivity decreases to 0.0056 Ω^{-1} cm^{-1}. A further addit ion HCl solution, the volume of which of which is equal to that of the first portion added, the conductivity increases to 0.017 Ω^{-1} cm^{-1}.

Solution:

*Answer can only contain numeric values

QUESTION: 23

The conductivity of 0.1 M NaOH solution is 0.0221 Ω^{-1} cm^{-1}. When an equal volume of 0.1 M HCl is added, the conductivity decreases to 0.0056 Ω^{-1} cm^{-1}. A further addit ion HCl solution, the volume of which of which is equal to that of the first portion added, the conductivity increases to 0.017 Ω^{-1} cm^{-1}. ________, _____ and _______ Ω^{-1} cm^{-1} respectively:

Solution:

*Answer can only contain numeric values

QUESTION: 24

The specific conductance of a saturated solution of AgCl at 25ºC after subtracting the specific conductance of water is 2.28 × 10^{–4} Sm^{–1}. The molar ionic conductance of Ag^{+} and Cl^{–} ions are 73.3 × 10^{–4} and 65 × 10^{–4} Sm^{2} mol^{–1}. The solubility of AgCl at 25ºC is _______ g/dm^{3}.

Solution:

= (73.3 + 65) ×10^{-4} S m^{2} mol^{-1} = 0.01383 S m^{2} mol^{-1} = 0.01383 ×10^{4} S cm^{2} mol^{-1} K = 2.28 ×10^{-4} S m^{-1} = 2.28 ×10^{-6} S cm^{-1}

1mol of AgCl = 108 + 35.5 = 143.5g

B = 1.648 ×10^{-5} ×143.5g / L or g / dm^{3}

= 2.36 ×10^{-3} g dm^{-3}

*Answer can only contain numeric values

QUESTION: 25

The ionic conductivities at infinite dilution of O_{x}^{2–}, K^{+} and Na^{+} are 148.2, 50.1 and 73.5 Ω^{-1} cm^{2} mol^{-1} respectively. The equivalent conductivities at infinite dilution of the salt KOOC. COONa is _______ Ω^{-1} cm^{2} mol^{-1}

Solution:

= 50.1 + 148.2 + 73.5 = 271.8Ω^{-1}cm ^{2} mol^{-1}

*Answer can only contain numeric values

QUESTION: 26

The molar conductivity of NH4Cl at infinite dilution is 149.7 Ω^{-1} cm^{2} mol^{-1} and the ionic conductivities of OH^{-} and Cl^{-} ions are 198 and 76.3 Ω^{-1} cm^{2} mol^{-1} respectively. The molar conductivity of NH_{4}OH at the dilution is _______ Ω^{-1} cm^{2} mol^{-1}:

Solution:

= (149.7 - 76.3 + 198)Ω^{-1}cm^{2} mol^{-1}

= 271.4Ω^{-1}cm^{2} mol^{-1}

*Answer can only contain numeric values

QUESTION: 27

A conductivity cell whose cell constant is 2cm^{–1} is filled with 0.1 M acetic acid solution. Its resistance is found to be 3765 Ω. The degree of dissociation of acetic acid are ______ . Given that and

Solution:

*Answer can only contain numeric values

QUESTION: 28

The conductivity of a saturated solution of silver okalate is 4.5 × 10^{–5} Ω^{-1} cm^{-1}. If its K_{sp} = 1.35 × 10^{-11} M^{3}, the molar conductivity of the saturated solution would be _______ Ω^{-1} cm^{2} mol^{-1}.

Solution:

*Answer can only contain numeric values

QUESTION: 29

The molar conductivity of 0.05 M of solution of an electrolyte is 200 Ω^{-1} cm^{2} mol^{-1}. The resistance offered by a conductivity cell with cell constant (1/3 cm^{-1}) would be _______Ω.

Solution:

*Answer can only contain numeric values

QUESTION: 30

A conductivity cell whose cell constant is 3 cm^{–1} is filled with 0.1 M solution of weak acids. Its resistance is found to be 3000 Ω. the degree of dissociation of weak acid is _______.

Solution:

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