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MHT CET Medical202622 April 2026Evening ShiftChemistryElectrochemistryActual

What is the cell constant of a cell containing a solution of resistance 90 Ohm with conductivity 2 10⁻³ Ohm ⁻¹ cm ⁻¹ ?

Options

  1. A0.50 cm ⁻¹
  2. B0.18 cm ⁻¹
  3. C0.029 cm ⁻¹
  4. D0.70 cm ⁻¹

Correct answer

B. 0.18 cm ⁻¹

Step-by-step solution

The cell constant G^* is related to conductivity and resistance R by the formula: G^* = R Given: = 2 10⁻³ ⁻¹ cm ⁻¹ R = 90 Substituting the values: G^* = (2 10⁻³) 90 G^* = 180 10⁻³ cm ⁻¹ G^* = 0.18 cm ⁻¹ Answer: 0.18 cm ⁻¹

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