Electrolytic reduction of Alumina is by
Oswald process
Contact process
Hall's process
Roasting
The earthy impurities associated with there ore is called
Flux
Gangue
Slag
Metallaid
The vertical columns in the periodic table are called.
Periods
Chalcogens
Groups
Column
The horizontal rows in the periodic table are called
Rows
Periodic
Periodic table
Which of the following is the process of extracting the ores from the earth crust?
Mining
Metallurgy
Smelling
Which of the following is a single compound or complex mixture of various compound, of metal which are formed in earth?
Ores
Minerals
Metals
Metalloids
Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Which of the following is expressed in carat?
Purity of gold
Purity of silver
Purity of platinum
Purity of diamond
Which one of the following is the ore of iron ?
Chalcocite
Haematite
Cuprite
Zinc blende
Which of the following is a process of coating zinc on iron sheets by using electric current?
Electroplating
Galvanization
Smelting
Rusting
