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A conductivity cell containing $0.001 \mathrm{M} \mathrm{AgNO}_3$ solution develops resistance $6530 \mathrm{ohm}$ at $25^{\circ} \mathrm{C}$. Calculate the electrical conductivity of solution at same temperature if the cell constant is $0.653 \mathrm{~cm}^{-1}$.

• A
  $1.3 \times 10^{-4} \Omega^{-1} cm ^{-1}$
• B
  $1.5 \times 10^{-4} \Omega ^{-1} cm ^{-1}$
• C
  $1.7 \times 10^{-4} \Omega^{-1} cm ^{-1}$
• ✓
  $1.0 \times 10^{-4} \Omega^{-1} cm ^{-1}$