One of the commonly used electrode is calomel electrode. Under which of the following categories cal — JEE Mains Chemistry Past Papers Chemistry Question

Question

One of the commonly used electrode is calomel electrode. Under which of the following categories calomel electrode comes ? (A) Metal – Insoluble Salt – Anion electrodes (B) Oxidation – Reduction electrodes (C) Gas – Ion electrodes (D) Metal ion – Metal electrodes