Which one of the following does not occur as sulphide ore (a) Zn (b) Cr (c) Ag (d) Fe (e) Hg Which one of the following does not occur as sulphide ore (a) Zn (b) Cr (c) Ag (d) Fe (e) Hg November 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]