In case of castner's process the following is true.

Nickel : anode

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Iron : anode

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Iron : cathode

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Nickel : cathode

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Solution

The correct options are
A Nickel : anode
C
Iron : cathode

a) Nickel : Anode : Oxidation takes place here

$4 O H^{-} \to 2 H_{2} O + O_{2} + 4 e^{-}$

b) Iron : Cathode : Reduction takes place here

$2 N a^{+} + 2 e \to 2 N a$

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In case of castner's process the following is true.

The correct options are A Nickel : anode C Iron : cathode a) Nickel : Anode : Oxidation takes place here 4OH− → 2H2O + O2 + 4e− b) Iron : Cathode : Reduction takes place here 2Na+ + 2e → 2Na

The correct options are
A Nickel : anode
C
Iron : cathode

a) Nickel : Anode : Oxidation takes place here

$4 O H^{-} \to 2 H_{2} O + O_{2} + 4 e^{-}$

b) Iron : Cathode : Reduction takes place here

$2 N a^{+} + 2 e \to 2 N a$