Which of the following options are correct?

Options

A. Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast
B. In extraction of silver, silver is extacted as cationic complex
C. Nickel is purified by zone refining
D. Zr and Ti are prified by van Arkel method

Answer

A, D

Explanation

(a,d) Correct statements are
(a) Cast irons is obtained by remelting pig with scarp iron and coke using hot air blast
(d) Zr and Ti are purified by van Arkel method as
`underset("Impure")(Zr) + 2I_(2) to underset("Volatile")(ZrI_(4)) overset(Delta)to underset("Pure")(Zr)+2I_(2)`