Which of the following is not a non-ferrous mineral? |
|||||||
(a) |
Bauxite |
(b) |
Copper |
(c) |
Zinc |
(d) |
Manganese |
Which of the following is not a non-ferrous mineral? |
|||||||
(a) |
Bauxite |
(b) |
Copper |
(c) |
Zinc |
(d) |
Manganese |