General Principles And Processes Of Isolation Of Elements

the correct answer is: A-II, B-III, C-IV, D-I.

The metal refined by the Van Arkel method is Zr (Zirconium).

The Van Arkel method, also known as the iodide process, is a technique used for the purification of certain metals, including zirconium. In this method, the metal is converted into a volatile metal iodide, which is then decomposed to obtain pure metal. The Van Arkel method is commonly used for the purification and production of high-purity zirconium metal.