Question

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

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \left(A\right)& \text{Blistered}Cu& \left(I\right)& \text{Aluminium}\\ \left(B\right)& \text{Blast furnace}& \left(II\right)& 2C{u}_{2}O+C{u}_{2}S\to 6Cu+S{O}_2\\ \left(C\right)& \text{Reverberatory furnace}& \left(III\right)& \text{Iron}\\ \left(D\right)& \text{Hall-Heroult process}& \left(IV\right)& FeO+Si{O}_2\to FeSi{O}_3\\ & & \left(V\right)& 2C{u}_{2}S+3O_2\to 2C{u}_{2}O+2S{O}_2\end{array}$

• A. $A\left(IV\right)B\left(V\right)C\left(III\right)D\left(II\right)$
• B. $A\left(V\right)B\left(IV\right)C\left(III\right)D\left(II\right)$
• C. $A\left(I\right)B\left(II\right)C\left(III\right)D\left(V\right)$
• D. $A\left(II\right)B\left(III\right)C\left(IV\right)D\left(I\right)$

Answer 1

The correct option is D $A\left(II\right)B\left(III\right)C\left(IV\right)D\left(I\right)$

$\text{Correct match}$

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \left(A\right)& \text{Blistered}Cu& \left(II\right)& 2C{u}_{2}O+C{u}_{2}S\to 6Cu+S{O}_2\\ \left(B\right)& \text{Blast furnace}& \left(III\right)& \text{Iron}\\ \left(C\right)& \text{Reverberatory furnace}& \left(IV\right)& FeO+Si{O}_2\to FeSi{O}_3\\ \left(D\right)& \text{Hall-Heroult process}& \left(I\right)& \text{Aluminium}\end{array}$

Part (A):

Blistered $Cu$ can be prepared by means of following reaction:

$2S{u}_{2}O+C{u}_{2}S\to 6Cu+S{O}_2$

The solid copper so obtained has a blister appearance due to the evolution of $S{O}_2$ and so it is called blister copper.

$\left(A\right)\to \left(II\right)$

Part (B):

Iron is extracted by reduction of the oxides of iron with $CO$ and coke in a Blast furnace.

$F{e}_2{O}_3\left(s\right)+3CO\left(g\right)\to 2Fe\left(l\right)+3CO\left(g\right)$

$\left(B\right)\to \left(III\right)$

Part (C):

The sulphide ore of copper is heated in a reverberatory furnace after mixing with silica.

In the furnace, iron oxide 'slags off' as iron silicate is formed.

$FeO+Si{O}_2\to FeSi{O}_3$
(Slag)
$\left(C\right)\to \left(IV\right)$

Part (D):

Hall-Heroult process is used for extraction of aluminium.

$2A{l}_2{O}_3+3C\to 4Al+3C{O}_2$

$\left(D\right)\to \left(I\right)$