The heating process for the extraction of elements are quite old but highly acceptable method for the extraction of elements. Become in this process the elements produced is in the highly pure state. Mostly As, Sb,Ni, Zr,B etc are prepared by this principle 4 mumber of metal sulphides which may be reated first in air to partially convert them to the aride, and then further roasted in the absence of air, wing self reduction. In the purification Zr and Ti, which of the following is/are true

The heating process for the extraction of elements are quite old but h

1.	The heating process for the extraction of elements are quite old but highly acceptable method for the extraction of elements. Become in this process the elements produced is in the highly pure state. Mostly As, Sb,Ni, Zr,B etc are prepared by this principle 4 mumber of metal sulphides which may be reated first in air to partially convert them to the aride, and then further roasted in the absence of air, wing self reduction. In the purification Zr and Ti, which of the following is/are true
Answer» `Zr+2I_(2) to ZrI_(4) OVERSET("passed over") underset("the white hot w") to` the pure Zr is deposited on W :`Ti+2I_(2) to TiI_(4) overset("passed over") underset("the white hot w") to` the pure Ti is deposited on W :`Zr+2I_(2) to ZrI_(4) overset("MIXED with W") underset("& then heated") to ZrI_(4)` is reudced to `ZrI_(4)` Both a & b are correct Solution :Van Arkel method is USED to purfiy `Ti, Zr, HF...` `underset(("1M pure"))(Ti//Zn)+I_(2) to underset(Ti//r("pure")) underset(darr)(Ti//Zr) ("iodide")TiI_(4)(g)//Znrl_(4)` Pure Ti// Zr are deposited on W surface.