Pl answer 

Asked by jain.pradeep | 28th Feb, 2020, 11:38: AM

Expert Answer:

Correct option is (a)
 
Certain metals can be obatined in ultra pure sate by heating with iodine and then decomposing it at much higher temperature is known as Van Arkel Process.
 
Van Arkel Method is used to prepare ultra pure metals.
In this method, impure metal is first converted into volatile stable compound generally iodine.
Iodine is then decomposed at high temperature to get pure metal.
 
Metals Zr, U, Th, Ti are purified by this method.
 

Answered by Varsha | 28th Feb, 2020, 03:43: PM