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Extraction of Aluminium

The chief imp...

Question

The chief impurity present in red bauxite is _____________.

A

S i O_{2}

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B

F e_{2} O_{3}

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C

K_{2} S O_{4}

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D

N a F

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Solution

The correct option is B $F e_{2} O_{3}$
The chief impurity present in red bauxite is ferric oxide $(F e_{2} O_{3})$ . The other impurities present are silica $(S i O_{3})$ and titanium oxide $(T i O_{3})$

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Q. What is the chief impurity present in red bauxite ?

Q. In the extraction of aluminium,
Process X: applied for red bauxite to remove iron oxide (chief impurity)
Process Y: applied for white bauxite to remove Z (chief impurity).

Then, Process X and impurity Z are:

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