The following are some statements about normal hydrogen electrode (NHE)
I) when a ‘Zn’ electrode is in combination of NHE, Zn electrode acts as cathode
II) when a ‘Cu’ electrode is in combination with NHE, Cu electrode is the anode
III) when a ‘Ag’ electrode is in combination with NHE, Ag electrode is the anode
IV) when a chlorine electrode is in combination with NHE, chlorine electrode is the anode

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Only (I) is correct

All are correct

All are incorrect

Both II & III correct

answer is C.

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Detailed Solution

Zn electrode act as anode. Cu, Ag and Cl act as cathode. Zn having less reduction potential copper, silver and chlorine having more reduction potential than hydrogen

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