List-I | List-II | ||
(A) | Isothermal process | (I) | No heat exchange |
(B) | Isochoric process | (II) | Carried out at constant temperature |
(C) | Isobaric process | (III) | Carried out at constant volume |
(D) | Adiabatic process | (IV) | Carried out at constant pressure |
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –