Which is an ore of potassium
Carnellite
Cryolite
Bauxite
Dolomite
Carnellite - KCl.MgCl2.6H2O
Cryolite - Na3AlF6
Bauxite - (Al2O3.2H2O)
Dolomite - MgCO3.CaCO3
From the given set of minerals, the number of ores of copper is/are ___ Chalcocite, pyrargyrite, cuprite, carnallite, covellite, sphalerite, azurite, malachite, cryolite
For how many of the following ores calcinations is done during extraction of metals?___ (a) Haematite (b) Calamine (c) dolomite (d) bauxite (e) zinc blende