Magnetic Separation

Q. How to determine magnetic nature of NO2 and N2O4

Q.

Gravity separation is generally applicable for heavier ores such as Haematite and Cassiterite.

1. True

2. False

Q. Spodumene is important mineral of ________.

1. sodium
2. lithium
3. potassium
4. rubidium

Q. Magnetic separation is suitable for which one of the following ores?

1. Cassiterite
2. Galena
3. Cinnabar
4. Sphalherite