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Solution


Q.

One of the commonly used electrodes is calomel electrode. Under which of the following categories calomel electrode come          [2024]
1 Metal ion – Metal electrodes  
2 Oxidation – Reduction electrodes  
3 Metal – Insoluble Salt – Anion electrodes  
4 Gas – Ion electrodes  

Ans.

(3)

Calomel electrode is a metal-metal insoluble salt-anion half cell. It is commonly used as a reference like standard hydrogen electrode.