List- I (ores) | List- II (Composition) |
(a) Haematite | \(Fe_3O_4\) | (i)
(b) Magnetite | \(ZnCO_3\) | (ii)
(c) Calamine | \(Fe_2O_3\) | (iii)
(d) Kaolinite | \([Al_2(OH)_4Si_2O_5]\) | (iv)
(a) | (b) | (c) | (d) | |
1. | (i) | (iii) | (ii) | (iv) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (iii) | (i) | (ii) | (iv) |
4. | (iii) | (i) | (iv) | (ii) |
Which one is a malachite from the following?
1. CuCO3.Cu(OH)2
2. CuFeS2
3. Cu(OH)2
4. Fe3O4
Identify the incorrect statement:
1. | The scientific and technological process used for isolation of the metal from its ore is known as metallurgy |
2. | Minerals are naturally occurring chemical substances in the earth's crust |
3. | Ores are minerals that may contain a metal |
4. | Gangue is an ore contaminated with undesired materials |