Conductor and Conductance - MCQ - Advance Level

Conductor and Conductance - MCQ - Advance Level

Dear Readers,

Compared to other sections, Chemistry is considered to be the most scoring section. If prepared thoroughly, chemistry can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1. The specific conductance of a 0.1 N KCl solution at 23 degree celsius is 0.012 ohm^-1cm^-1. The resistance of cell containing the solution at the same temperature was found to be 55 Ohm. The cell constant will be

•  0.142 cm^-1
•  0.66 cm^-1
•  0.918 cm^-1
•  1.12 cm^-1

Q2. The conductivity of a saturated solution of BaSO₄ is 3.06x10^-6 ohm^-1cm^-1 and its equivalent conductance is 1.53 ohm^-1cm^-1equivalent^-1. The K_sp of BaSO₄ will be

•  4 x 10^-12
•  2.5 x 10^-9
•  2.5 x 10^-13
•  4 x 10^-6

Q3. The molar conductances of NaCl, HCl and CH₃COONa at infinite dilution are 126.45, 426.16 and 91 ohm^-1cm²mol^-1 respectively. The molar conductance of CH₃ at infinite dilution is

•  201.28 ohm^-1cm²mol^-1
•  390.71 ohm^-1cm²mol^-1
•  698.28 ohm^-1cm²mol^-1
•  540.48 ohm^-1cm²mol^-1

Q4. The resistance of 0.01 N NaCl solution at 25 degree celsius is 200 ohm. Cell constant of conductivity cell is 1cm^-1 . The equivalent conductance is

•  5 x 10²ohm^-1cm²eq^-1
•  6 x 10³ohm^-1cm²eq^-1
•  7 x 10⁴ohm^-1cm²eq^-1
•  8 x 10⁵ohm^-1cm²eq^-1

Q5. The specific conductance of a solution is and conductivity is 0.2 ohm^-1cm^-1 . The cell constant would be

•  1 cm^-1
•  0 cm^-1
•  5 cm^-1
•  0.2 cm^-1

Q6. Specific conductance of 0.1 m nitric acid is 6.3x10^-2ohm^-1cm^-1 . The molar conductance of solution is

•  630 ohm^-1cm²mole^-1
•  315 ohm^-1cm²mole^-1
•  100 ohm^-1cm²mole^-1
•  6300 ohm^-1cm²mole^-1

Q7. The specific conductivity of N/10 KCl solution at 20 degree celsius is 0.012 ohm^-1cm and the resistance of cell containing this solution at 20 degree celsius is 55 Ohm. The cell constant is

•  1.66 cm^-1
•  2.173 cm^-1
•  3.324 cm^-1
•  4.616 cm^-1

Q8. In infinite dilutions, the equivalent conductances of Ba²⁺ and cl^-1 are 127 and 76 ohm^-1cm^-1eq^-1 . The equivalent conductivity of BaCl₂ at indefinite dilution is

•  101.5
•  139.5
•  203.5
•  279.5

Q9. The equivalent conductance of an acetic acid solution of concentration 0.01 M is 1.65 mSm²mol^-1 at 298 K. The dissociation constant of acetic acid at this temperature is (given, ^₀=39.0 mSm²mol^-1 )

•  1.8 x 10^-4
•  4.0 x 10^-10
•  1.8 x 10^-5
•  1.8 x 10^-6

Q10. Which of the following statements is incorrect?

•  Increase in temperature increases the equivalent conductance
•  Conductance ratio decreases with increase in temperature
•  The solvent with low dielectric constant and the equivalent conductance decrease with increase in concentration
•  The solvent with high dielectric constant and the equivalent conductance decrease with increase in concentration