Communition of Ores

Q. Pair each of these methods used to concentrate metallic ores with its underlying principle.

1. Wettability
2. Magnetic ability
3. Density
4. Froth floatation
5. Hydraulic washing
6. Magnetic separation

Q. Pair each of these methods used to concentrate metallic ores with its underlying principle.

1. Wettability
2. Magnetic ability
3. Density
4. Froth floatation
5. Hydraulic washing
6. Magnetic separation

Q. Choose the memory cards with respect to the name of the ore and its chemical formula.

1. $F{e}_3{O}_4$
2. ${\mathrm{FeS}}_2$
3. ${\mathrm{Fe}}_2{O}_3$
4. Haematite
5. Magnetite
6. Iron pyrite

Q.

All ores are minerals whereas all minerals are not ores.

1. True

2. False

Q. What is the chemical formula of the following ores? Also write the name of the metal that can be extracted from the following ores?

(a) Bauxite
(b) Haematite
(c) Copper pyrite
[3 Marks]