Some of the batteries have alkaline electrolytes-

i) Nickel - cadmium ii) Mercury battery

iii) Modified Leclanche cell

Cell potential is independent of [OH $^{-}$ ] in :

i, ii

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ii, iii

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i, ii, iii

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iii only

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Solution

The correct option is C i, ii, iii
In the 3 cases $O H^{-}$ concentration do not change with time
$∴$ All cell potentials are independent of $[O H^{-}]$ concentration

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V : Fuel cell

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E_{2}

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