Froth flotation - Roasting - Reduction - Electrolysis The above processes are used in the extraction of-

The correct options are A Cu from CuFeS_2 B Zn from ZnSExtraction of Fe involves Crushing→Roasting/Calcination→Reduction. Extraction of Aluminium involves Diges ...

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Standard XII

Chemistry

Froth Floatation

Froth flotati...

Question

Froth flotation $\to$ Roasting $\to$ Reduction $\to$ Electrolysis
The above processes are used in the extraction of:

Cu from

C u F e S_{2}

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Zn from

Z n S

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Fe from

F e_{2} O_{3}

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Al from

A l_{2} O_{3} .2 H_{2} O

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Solution

The correct options are
A Cu from $C u F e S_{2}$
B Zn from $Z n S$
Extraction of Fe involves
Crushing $\to$ Roasting/Calcination $\to$ Reduction.
Extraction of Aluminium involves
Digestion $\to$ Heating $\to$ Electrolysis.
Froth flotation is used for sulfide ores.

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Reduction

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Electrolysis
The above processes are used in the extraction of:

Q. What is the appropriate order of processes for the extraction of lead from Galena?
A) Froth flotation B) Calcination C) Roasting D) Self Reduction E) Electrolytic Reduction F) Smelting

Q. The following flow chart represents the extraction of _______.

Froth flotation

↓

Roasting

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Electrolytic refining

State the principle for each of the following processes which are used in metallurgy in general.
(i) Roasting
(ii) Gravity separation
(iii) Froth flotation
(iv) Aluminothermy
(v) Calcination
(vi) Electromagnetic separation.

In the froth flotation process, stabilizers are used to attach ore particles to air bubbles in the froth.

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Froth flotation →Roasting→Reduction→Electrolysis The above processes are used in the extraction of:

The correct options are A Cu from CuFeS2 B Zn from ZnSExtraction of Fe involves Crushing→Roasting/Calcination→Reduction. Extraction of Aluminium involves Digestion→Heating→Electrolysis. Froth flotation is used for sulfide ores.

Froth flotation $\to$ Roasting $\to$ Reduction $\to$ Electrolysis
The above processes are used in the extraction of:

The correct options are
A Cu from $C u F e S_{2}$
B Zn from $Z n S$
Extraction of Fe involves
Crushing $\to$ Roasting/Calcination $\to$ Reduction.
Extraction of Aluminium involves
Digestion $\to$ Heating $\to$ Electrolysis.
Froth flotation is used for sulfide ores.