15. Column-I \( \rightarrow \) as they Column-ir the re
(A) Metal which occur in the native state in nature is
(B) The oxides of metal that
(Q) Ti
can be commercially
reduced by Aluminorthermite
reduction process is
(C) van Arkel method is used
(R) \( Cr \) for preparing ultrapure metal uí
(D) Auto reduction process is
(S) \( Ag \) employed for the sulphide ore of
(1) A-S, B-R, C-Q, D-P
(2) A-R, B-S, C-Q, D-P
(3) A-P, B-S, C-Q, D-R
(4) A-Q, B-R, C-S, D-P
