Match the items of Column I with items of Column II and assign the correct code :

Code :



A (2) 2Cu2O + Cu2S 6Cu + SO2


The copper produced is called Blister Copper because the evolution of SO2 gives the metal a blister appearance


B(3) A Blast furnace is used to reduce iron oxides to iron in different temperature ranges.


C(4) FeO + SiO2 FeSiO3


Roasting of sulphide ores is done in a reverberatory furnace. The sulphide ores are converted to oxides. If there is any iron present, it is mixed with silica and forms a slag which can be easily removed.


D(1) Hall-Heroult process is used in the extraction of Aluminium

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