Correct Answer - T
This cell is also called mercurry cathode cell. In this cell, `Hg` flows along the bottom of the cell and acts as cathode in the left hand compartment fitted with graphite anodes in brine `(NaCl)` solution, whereas the right hand compartment is fitted with `Fe` cathodes dippped in very dilute `NaOH` solution and `Hg` acts as anode in this compartment. Thus `Hg` acts as an intermediate electrode by induction, cathode on `LHS` and anode in `RHS.`
