मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

SI unit of conductivity is _______.

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प्रश्न

SI unit of conductivity is _______.

पर्याय

  • Ω-1 m-1

  • Ω cm-1

  • Ω m-1

  • Ω-1 m2 mol-1

MCQ
रिकाम्या जागा भरा
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उत्तर

SI unit of conductivity is Ω-1 m-1.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Electrochemistry - Multiple choice questions

संबंधित प्रश्‍न

0.05 M NaOH solution offered a resistance of 31.6 Ω in a conductivity cell at 298 K. If the cell constant of the cell is 0.367 cm-1, calculate the molar conductivity of NaOH solution.


The molar conductivity of 0.05 M BaCl2 solution at 25° C is 223Ω-1 cm2 mol-1. What is its conductivity?


What is a cell constant? What are its units? How is it determined experimentally?


Answer the following in one or two sentences.

Write the relationship between conductivity and molar conductivity and hence unit of molar conductivity.


Answer the following:

What is Kohlrausch law of independent migration of ions? How is it useful in obtaining molar conductivity at zero concentration of a weak electrolyte? Explain with an example.


In case of weak electrolyte the graph Λ vs `sqrt"c"` is _______.


The molar conductivity and conductivity of AgNO3 solution is 121.4 Ω–1 cm2 mol–1 and 2.428 × 10–3 Ω–1 cm–1 at 25 °C. What is molar concentration of AgNO3 solution?


Give SI unit of resistivity.


Write an equation that shows the relationship between molar conductivity and degree of dissociation of weak electrolyte.


Write applications of Kohlrausch’s Law.


Calculate molar conductivities at zero concentration for CaCl2 and NaCl.

Given: molar ionic conductivities of Ca2+, Cl–, Na+ ions are respectively, 104, 76.4, 50.1 Ω–1 cm–2 mol–1


Write relation between electrolytic conductivity and molar conductivity.


What will be the concentration of NaCl solution, if the molar conductivity and conductivity of NaCl solution is 124.3 Ω−1 cm2 mol−1 and 1.243 × 10−4 Ω−1 cm2 respectively?


The molar conductances at infinite dilution `(∧_0)` for electrolytes B+A− and C+A− are 140 and 120 S cm2 mol−1. The molar conductance at infinite dilution for B+X− is 198 S cm2 mol−1. The `∧_0` (in S cm2 mol−1) of C+X− is __________.


The conductivity of 0.02 M solution of NaCl is 2.6 × 10−2 S cm−1. What is its molar conductivity?


Conductivity of KCI solution is 0.0027 Ω−1 m−1 at 25°C. The resistance of the solution is 82.4 Ω. The cell constant is ____________ m−1.


The resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω. What is the cell constant if conductivity of 0.001 M KCI solution at 298 K is 0.146 × 10−3 S cm−1?


In 2 hours, a certain current liberates 0.504 g hydrogen. How many grams of copper can be deposited by the same current flowing for the same time in a CuSO4 solution?

(Molar mass of Cu = 63.5 g mol−1, H2 = 2.0 g mol−1)


Which of the following graph represents the variation of `∧` with `sqrt"c"` for acetic acid solution?


What is the relation between cell constant, conductivity and electrical resistance?


Conductivity of a conductor is ____________.


What is the conductivity of 0.01 M NaCl solution if resistance and cell constant of NaCl solution are 375 ohms and 0.5 cm-1 respectively at 298 K?


What is the SI unit of conductivity?


Which of the following has least conductivity in aqueous solution? 


Molar conductivities at infinite dilution of Mg2+ and Br- are 105.8 Ω-1 cm2 mol-1 and 78.2 Ω-1 cm2 mol-1 respectively. Calculate molar conductivity at zero concentration of MgBr2.


Specific conductance of 0.1 M HNO3 is 6.3 × 10−2 ohm−1 cm−1. The molar conductance of the solution is ______.


Which of the following expressions correctly represents molar conductivity?


The molar conductivity of a 0.02 mol dm−3 solution of sodium hydroxide is 230.5 Ω−1 cm2 mol−1. What is its conductivity?


Two solutions have the ratio of their concentrations 0.4 and ratio of their conductivities 0.216. What is the ratio of their molar conductivities?


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