Which of the following is the most abundant metal in the earth's crust?
Au
Ag
Al
Cu
Which one of the following is the process in which ore is heated in the absence of air?
Roasting
Calcination
Oxidation
Reduction
Electrolytic reduction of Alumina is by
Oswald process
Contact process
Hall's process
Which of the following is the process of extracting the ores from the earth crust?
Mining
Metallurgy
Smelling
Which of the following is a homogeneous mixture of two or more metals fused together?
Alloy
Iron
Gangue
Flux
Which of the following is an ore of aluminium?
Zinc blend
Hamatite
Bauxite
Cuprite
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
The vertical columns in the periodic table are called.
Periods
Chalcogens
Groups
Column
Which of the following is expressed in carat?
Purity of gold
Purity of silver
Purity of platinum
Purity of diamond
