Isolation of Elements

The correct statement(s) related to processes involved in the extraction of metals is(are) :

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(are)

The electrochemical extraction of aluminum from bauxite ore involves

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)

The correct statement(s) related to the metal extraction processes 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 is treated with T to obtain Au and Z. Choose the correct option(s).

Calamine, malachite, magnetic and cryolite, respectively, are

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 is continued in a closed furnace such that the contents undergo self-reduction. The weight ...

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)

Match the anionic species given in Column-I that are present in the ore(s) given in Column-II


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

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

Extraction of metal from the ore cassiterite involves

In self-reduction, the reducing species is

Iron is removed from chalcopyrite as

Partial roasting of chalcopyrite produces

Match the conversions in Column I with the type(s) of reaction(s) given in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 \(\times\) 4 matrix given in the ORS.

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Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of:

Extraction of zinc from zinc blende is achieved by

Match the extraction processes listed in Column I with metals listed in Column II.


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Give briefly the isolation of magnesium from sea water by the Dow process. Give equations for the steps involved.

Give reasons of the following:
Why is sodium chloride added during electrolysis of fused anhydrous magnesium chloride?