Extraction of specific metals

The following reaction occurs in the Blast Furnace where iron ore is reduced to iron metal :
$$\ce{Fe2O3(s) + 3CO(g) <=> 2Fe(l) + 3CO2(g)}$$
Using the Le Chatelier's principle, predict which one of the following will not disturb the equilibrium ?

Extraction of copper from copper pyrite $(\ce{CuFeS2})$ involves

Galvanization is applying a coating of :

Extraction of copper by smelting uses silica as an additive to remove :

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

In the context of the Hall - Heroult process for the extraction of Al, which of the following statements is false ?

Upon heating with $\ce{Cu2S}$, the reagent(s) that give copper metal is/are

Which series of reactions correctly represents chemical relations related to iron and its compound ?

The form of iron obtained from blast furnace is :

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

Extraction of metal from the ore cassiterite involves

Partial roasting of chalcopyrite produces

Iron is removed from chalcopyrite as

In self-reduction, the reducing species is

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

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 × 4 matrix given in the ORS.

Extraction of zinc from zinc blende is achieved by