Metallurgy Questions

Sulfide ores are common for the metals -

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out :

Choose the correct option using the code regarding roasting process.(I) It is the process of heating the ore in air in a reverberatory furnace to obtain the oxide.(II) It is an exothermic process.(III...

Which one of the following processes involves the principle of fractional crystallisation for the refining of impure metals ?

Extraction of gold and silver involes leaching with CN–ion. Silver is later recovered by :-

The carbon-based reduction method is NOT used for the extraction of

Calcium silicate (slag) formed in the slag formation zone in extraction of iron from haematite ore :

Which method of purification is represented by the following equation :

Aluminium is extracted from alumina (Al2 O2) by electrolysis of a molten mixture of

Which one of the following is a mineral of iron?

In the extraction of copper from its sulphide ore, the metal is finally obtained by thee reduction of cuprous oxide with

Identify the alloy containing a non-metal as a constituent in it.

Oxidation states of the metal in the minerals haematite and magnetite, respectively, are

Which one of the following is a mineral of iron?

Identify the alloy containing a non-metal as a constituent in it.

In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of :

In the cyanide extraction process of silver from argentite ore, the oxidising and reducing agents used are

Which of the following elements is present as the impurity to the maximum extent in the pig iron ?

Which of the following pairs of metals is purified by Van Arkel method ?