21.
Copper pyrites are concentrated by
(1) Electromagnetic method
(3) Froth floatation process
(2) Gravity method
(4) All the above methods
Answers
Answered by
0
I think the answer is option D
Similar questions
History,
7 months ago
Science,
7 months ago
Hindi,
7 months ago
Business Studies,
1 year ago
English,
1 year ago