(B) $CaCO_3 \to CaO + CO_2$$\underset{\text{Flux}}{CaO} + \underset{\text{Impurity of haematite}}{SiO_2} \to \underset{\text{Slag}}{CaSiO_3}$In the ex

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(B) $CaCO_3 \to CaO + CO_2$$\underset{\text{Flux}}{CaO} + \underset{\text{Impurity of haematite}}{SiO_2} \to \underset{\text{Slag}}{CaSiO_3}$In the extraction of iron,limestone $(CaCO_3)$ decomposes to form calcium oxide $(CaO)$,which acts as a flux to remove acidic impurities like silica $(SiO_2)$ in the form of slag $(CaSiO_3)$.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Reduction to free Metal

Medium

In the manufacture of iron from haematite,the function of limestone is as

A
$A$. $A$ reducing agent
B
$B$. Flux
C
$C$. Slag
D
$D$. Gangue

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Reduction to free Metal

What should be the considerations during the extraction of metals by electrochemical method?

Medium

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For which of the following metals is the self-reduction process $NOT$ used?

Medium

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Which of the following pair of ores cannot be converted into corresponding metals by pyrometallurgy?

Easy

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In the extraction of silver,the following reactions take place:
$Ag_2S + NaCN \rightarrow A$
$A + Zn \rightarrow B$
If $B$ is a metal,identify $A$ and $B$.

Medium

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An ore of metal $'M'$ $\xrightarrow{\text{Roasting}}$ Metal oxide $\xrightarrow{\text{carbon reduction}}$ $'M'$
(After crushing and grinding)
$'M'$ may be :-

Medium

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In the manufacture of iron from haematite,the function of limestone is as

Similar Questions

What should be the considerations during the extraction of metals by electrochemical method?

For which of the following metals is the self-reduction process $NOT$ used?

Which of the following pair of ores cannot be converted into corresponding metals by pyrometallurgy?

In the extraction of silver,the following reactions take place:$Ag_2S + NaCN \rightarrow A$$A + Zn \rightarrow B$If $B$ is a metal,identify $A$ and $B$.

An ore of metal $'M'$ $\xrightarrow{\text{Roasting}}$ Metal oxide $\xrightarrow{\text{carbon reduction}}$ $'M'$ (After crushing and grinding) $'M'$ may be :-

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In the extraction of silver,the following reactions take place:
$Ag_2S + NaCN \rightarrow A$
$A + Zn \rightarrow B$
If $B$ is a metal,identify $A$ and $B$.

An ore of metal $'M'$ $\xrightarrow{\text{Roasting}}$ Metal oxide $\xrightarrow{\text{carbon reduction}}$ $'M'$
(After crushing and grinding)
$'M'$ may be :-