The major impurity in Iron ore is
Calcium oxide
Silica
Clay
Mud
Sulphuric acid is manufactured by the process called
Ostwald process
Koope's process
Contact process
Hall's process
The main ore of iron is
Haematite
Calcinite
Bauxite
Epsom
The process of manufacture of nitric acid is called
Van Arkel process
The first explosive used for warfare and in mining and quarrying
Trinitrotoluene
Gun powder
Ammonium nitrate
Nitroglycerine
An electrolytic process of extracting aluminium is
Hall - Heroult process
Bauxite process
Concentrated Sodium Chloride solution is called
Oleum
Brine
Galena
Vinegar
Magnesium metal is extracted from
Magnesium hydroxide
Magnesium chloride
Magnesium sulphate
Magnesium oxide
The process of coating an object with a layer of the more reactive metal zinc is called
Electrolysis
Galvanisation
Chromatography
Thermal analysis
Copper is extracted from the ore
Copper sulphide
Copper pyrites
Copper sulphate
Copper chloride
