Metallurgy (10)

Occurrence of metals in nature; Stages involved in the extraction of metals

Extraction of Aluminium

Alloys - composition and uses

The method used to separate ore from gangue by preferential wetting
Name the main component of the following alloys
Name the most common ore of the metal aluminum from which the metal is extracted
Name the process by which impure ore of aluminum gets purified by using concentrated solution of an alkali
Write the equation for the formation of aluminum at the cathode during the electrolysis of alumina
An alloy of lead and tin that is used in electrical circuits
An ore of zinc containing its sulphide
A metal oxide that can be reduced by hydrogen
The metal whose oxide, which is amphoteric, is reduced to metal
The two main metals in Bronze are
With respect to the electrolytic process in the extraction of aluminum
Name the solution used to react with Bauxite as a first step in obtaining pure aluminum oxide
Write the equation for the reaction where the aluminum oxide
Name the compound added to pure alumina to lower the fusion temperature
The reason for using Aluminium in the alloy duralumin is
Reduction of copper (II) oxide by hydrogen
The process by which certain ores, specially carbonates
Give the chemical formula of
Extraction of aluminium from alumina by Hall-Heroult's Process
Sulphide ore is added to a tank containing oil and water
The substance prepared by adding other metals to a base metal
An alloy used to make statues is
Baeyer's process is used to concentrate bauxite ore to alumina
The property by which certain hydrated salts, when left exposed to atmosphere
The process by which sulphide ore is concentrated
Action of heat on aluminum hydroxide
The most common ore of iron is _____ . (calamine / haematite)
For the electro-refining of copper