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The equivalent conductance at infinite dilution $\left( {{ \wedge ^0}} \right)$ for electrolytes $BA$ and $CA$ are $140$ and $120\  S\  cm^2 eq^{-1}$. The equivalent conductance at infinite dilution for $BX$ is $198\  S \ cm^2 eq^{-1}$. The ${ \wedge ^0}$ (in $S\  cm^2 eq^{-1}$) of $CX$ is

• ✓
  $178$
• B
  $198$
• C
  $218$
• D
  $130$