Which of the following metal’s ore can be concentrated by magnetic separation method?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Iron
Magnetic separation concentrates an ore when either the ore or the gangue is attracted by a magnet. The powdered ore is carried on a conveyor belt over a magnetic roller; the magnetic particles fall close to the roller and the non-magnetic ones farther away. Iron ores such as magnetite, \( \ce{Fe3O4} \), are magnetic, so iron ores are concentrated by this method.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Magnetic Separation
