Which of the following is the most abundant metal in the earth's crust?
Au
Ag
Al
Cu
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 used in dental filling?
Aluminium
Steel
Dental amalgams
Bauxite
Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Gangue
Flux
The earthy impurities associated with there ore is called
Slag
Metallaid
Which one of the following is the ore of iron ?
Chalcocite
Haematite
Cuprite
Zinc blende
The horizontal rows in the periodic table are called
Rows
Periodic
Periodic table
Chalcogens
Which one of the following is a method of coating ore metal with another by passing electric current?
Electroplating
Rusting
Galvanization
Smelting
Which one of the following is the process in which ore is heated in the presence of excess of air?
Oxidation
Reduction
Calcination