(C) In the electrolytic extraction of aluminum,pure alumina $(Al_2O_3)$ has a very high melting point and is a poor conductor of electricity. Cryolite

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Increasing the electrical conductivity

(C) In the electrolytic extraction of aluminum,pure alumina $(Al_2O_3)$ has a very high melting point and is a poor conductor of electricity. Cryolite $(Na_3AlF_6)$ is added to alumina to lower its melting point and increase its electrical conductivity.

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

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Cryolite $(Na_3AlF_6)$ helps in:

A
Lowering the melting point
B
Increasing the melting point
C
Increasing the electrical conductivity
D
Decreasing the electrical conductivity

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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

Write down the reactions taking place in the blast furnace related to the metallurgy of iron in the temperature range $500-800 \ K$.

Medium

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Describe the reaction occurring in the blast furnace at the lower temperature range.

Easy

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In the Goldschmidt aluminothermic process,thermite contains:

Medium

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$Ag_2S + NaCN \to (A)$,$(A) + Zn \to (B)$
$(B)$ is a metal. Hence,$(A)$ and $(B)$ are:

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Iron can be obtained on a large scale from $Fe_2O_3$ by which of the following methods?

Easy

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Cryolite $(Na_3AlF_6)$ helps in:

Similar Questions

Write down the reactions taking place in the blast furnace related to the metallurgy of iron in the temperature range $500-800 \ K$.

Describe the reaction occurring in the blast furnace at the lower temperature range.

In the Goldschmidt aluminothermic process,thermite contains:

$Ag_2S + NaCN \to (A)$,$(A) + Zn \to (B)$$(B)$ is a metal. Hence,$(A)$ and $(B)$ are:

Iron can be obtained on a large scale from $Fe_2O_3$ by which of the following methods?

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$Ag_2S + NaCN \to (A)$,$(A) + Zn \to (B)$
$(B)$ is a metal. Hence,$(A)$ and $(B)$ are: