Chemistry
Isolation of Elements
Previous Years Questions

## MCQ (More than One Correct Answer)

The correct option(s) related to the extraction of iron from its ore in the blast furnace operating in the temperature range $900-1500 \mathrm{~K}$ is...
The electrochemical extraction of aluminum from bauxite ore involves
The correct statement(s) related to the metal extraction processes is (are) :
A mixture of two salts is used to prepare a solution S, which gives the following results :The correct option(s) for the salt mixture is (are)...
Which among the following statement(s) is/are true for the extraction of aluminium from bauxite?
The cyanide process of gold extraction involves leaching out gold from its ore with CN$$-$$ in the presence of Q in water to form R. Subsequently, R i...
Extraction of copper from copper pyrite (CuFeS2) involves
Copper is purified by electrolytic refining of blister copper. The correct statement(s) about this process is(are)
The carbon–based reduction method is NOT used for the extraction of
Extraction of metal from the ore cassiterite involves

## MCQ (Single Correct Answer)

Calamine, malachite, magnetic and cryolite, respectively, are
Match the anionic species given in Column-I that are present in the ore(s) given in Column-II .tg {border-collapse:collapse;border-spacing:0;border...
Sulphide ores are common for the metals
In the cyanide extraction process of silver from argentite ore, the oxidising and reducing agents used are
Oxidation states of the metal in the minerals haematite and magnetite, respectively are
Partial roasting of chalcopyrite produces
Iron is removed from chalcopyrite as
In self-reduction, the reducing species is

## Numerical

Galena (an ore) is partially oxidized by passing air through it at high temperature. After some time, the passage of air is stopped, but the heating i...
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