Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Gangue
Flux
Which of the following is the process of extracting the ores from the earth crust?
Mining
Metallurgy
Smelling
Roasting
Which one of the following is the process in which ore is heated in the absence of air?
Calcination
Oxidation
Reduction
The earthy impurities associated with there ore is called
Slag
Metallaid
Which one of the following is the process in which ore is heated in the presence of excess of air?
Which of the following is a process of coating zinc on iron sheets by using electric current?
Electroplating
Galvanization
Smelting
Rusting
Which of the following is an ore of aluminium?
Zinc blend
Hamatite
Bauxite
Cuprite
Which of the following is expressed in carat?
Purity of gold
Purity of silver
Purity of platinum
Purity of diamond
Electrolytic reduction of Alumina is by
Oswald process
Contact process
Hall's process
