Question

Match the information given in the three columns of the following table.

Column 1: Metal

Column 2: Ores

Column 3: Composition
The only correct combination in which “Auto Reduction” is used for the extraction of metal:

$\begin{array}{cccccc}& \text{Column 1}& & \text{Column 2}& & \text{Column 3}\\ \left(I\right)& \text{Aluminium}& \left(i\right)& \text{Haematite}& \left(P\right)& CuFe{S}_2\\ \left(II\right)& \text{Iron}& \left(ii\right)& \text{Zinc blende}& \left(Q\right)& Al{O}_x(OH{)}_{3-2x}\\ \left(III\right)& \text{Copper}& \left(iii\right)& \text{Bauxite}& \left(R\right)& F{e}_2{O}_3\\ \left(IV\right)& \text{Zinc}& \left(iv\right)& \text{Copper pyrite}& \left(S\right)& ZnS\end{array}$

• A. (II) (i) (R)
• B. (II) (i) (P)
• C. (I) (iv) (P)
• D. (III) (iv) (P)

Answer 1

The correct option is D (III) (iv) (P)

Copper, Copper Pyrite, $CuFe{S}_2$

Aluminium and Zinc are extracted by electrolysis, Copper is extracyted by auto-reduction. Iron is extracted by reduction.