Q. Which of the following ore is not concentrated by forth floatation process?
A) Pyrolusite
B) Pentlandite
C) Zinc blende
D) Copper pyrites
Explanation
(a)
Pyrolusite $(MnO_{2})$ is not a sulphide ore, so it is not concentrated by forth floatation process
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.